Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Server-side XDR for NFSv4 |
| 3 | * |
| 4 | * Copyright (c) 2002 The Regents of the University of Michigan. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Kendrick Smith <kmsmith@umich.edu> |
| 8 | * Andy Adamson <andros@umich.edu> |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * 3. Neither the name of the University nor the names of its |
| 20 | * contributors may be used to endorse or promote products derived |
| 21 | * from this software without specific prior written permission. |
| 22 | * |
| 23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 34 | * |
| 35 | * TODO: Neil Brown made the following observation: We currently |
| 36 | * initially reserve NFSD_BUFSIZE space on the transmit queue and |
| 37 | * never release any of that until the request is complete. |
| 38 | * It would be good to calculate a new maximum response size while |
| 39 | * decoding the COMPOUND, and call svc_reserve with this number |
| 40 | * at the end of nfs4svc_decode_compoundargs. |
| 41 | */ |
| 42 | |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 43 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/namei.h> |
Boaz Harrosh | 341eb18 | 2009-12-03 20:29:12 +0200 | [diff] [blame] | 45 | #include <linux/statfs.h> |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 46 | #include <linux/utsname.h> |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 47 | #include <linux/pagemap.h> |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 48 | #include <linux/sunrpc/svcauth_gss.h> |
Boaz Harrosh | 9a74af2 | 2009-12-03 20:30:56 +0200 | [diff] [blame] | 49 | |
J. Bruce Fields | 2ca72e1 | 2011-01-04 17:37:15 -0500 | [diff] [blame] | 50 | #include "idmap.h" |
| 51 | #include "acl.h" |
Boaz Harrosh | 9a74af2 | 2009-12-03 20:30:56 +0200 | [diff] [blame] | 52 | #include "xdr4.h" |
J. Bruce Fields | 0a3adad | 2009-11-04 18:12:35 -0500 | [diff] [blame] | 53 | #include "vfs.h" |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 54 | #include "state.h" |
J. Bruce Fields | 1091006 | 2011-01-24 12:11:02 -0500 | [diff] [blame] | 55 | #include "cache.h" |
J. Bruce Fields | 2ca72e1 | 2011-01-04 17:37:15 -0500 | [diff] [blame] | 56 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
| 58 | |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 59 | /* |
| 60 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing |
| 61 | * directory in order to indicate to the client that a filesystem boundary is present |
| 62 | * We use a fixed fsid for a referral |
| 63 | */ |
| 64 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL |
| 65 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL |
| 66 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 67 | static __be32 |
| 68 | check_filename(char *str, int len, __be32 err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | { |
| 70 | int i; |
| 71 | |
| 72 | if (len == 0) |
| 73 | return nfserr_inval; |
| 74 | if (isdotent(str, len)) |
| 75 | return err; |
| 76 | for (i = 0; i < len; i++) |
| 77 | if (str[i] == '/') |
| 78 | return err; |
| 79 | return 0; |
| 80 | } |
| 81 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | #define DECODE_HEAD \ |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 83 | __be32 *p; \ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 84 | __be32 status |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | #define DECODE_TAIL \ |
| 86 | status = 0; \ |
| 87 | out: \ |
| 88 | return status; \ |
| 89 | xdr_error: \ |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 90 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
| 91 | __FILE__, __LINE__); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | status = nfserr_bad_xdr; \ |
| 93 | goto out |
| 94 | |
| 95 | #define READ32(x) (x) = ntohl(*p++) |
| 96 | #define READ64(x) do { \ |
| 97 | (x) = (u64)ntohl(*p++) << 32; \ |
| 98 | (x) |= ntohl(*p++); \ |
| 99 | } while (0) |
| 100 | #define READTIME(x) do { \ |
| 101 | p++; \ |
| 102 | (x) = ntohl(*p++); \ |
| 103 | p++; \ |
| 104 | } while (0) |
| 105 | #define READMEM(x,nbytes) do { \ |
| 106 | x = (char *)p; \ |
| 107 | p += XDR_QUADLEN(nbytes); \ |
| 108 | } while (0) |
| 109 | #define SAVEMEM(x,nbytes) do { \ |
| 110 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ |
| 111 | savemem(argp, p, nbytes) : \ |
| 112 | (char *)p)) { \ |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 113 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
| 114 | __FILE__, __LINE__); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | goto xdr_error; \ |
| 116 | } \ |
| 117 | p += XDR_QUADLEN(nbytes); \ |
| 118 | } while (0) |
| 119 | #define COPYMEM(x,nbytes) do { \ |
| 120 | memcpy((x), p, nbytes); \ |
| 121 | p += XDR_QUADLEN(nbytes); \ |
| 122 | } while (0) |
| 123 | |
| 124 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ |
| 125 | #define READ_BUF(nbytes) do { \ |
| 126 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ |
| 127 | p = argp->p; \ |
| 128 | argp->p += XDR_QUADLEN(nbytes); \ |
| 129 | } else if (!(p = read_buf(argp, nbytes))) { \ |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 130 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
| 131 | __FILE__, __LINE__); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | goto xdr_error; \ |
| 133 | } \ |
| 134 | } while (0) |
| 135 | |
J. Bruce Fields | ca2a05a | 2007-11-11 15:43:12 -0500 | [diff] [blame] | 136 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | { |
| 138 | /* We want more bytes than seem to be available. |
| 139 | * Maybe we need a new page, maybe we have just run out |
| 140 | */ |
J. Bruce Fields | ca2a05a | 2007-11-11 15:43:12 -0500 | [diff] [blame] | 141 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 142 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | if (avail + argp->pagelen < nbytes) |
| 144 | return NULL; |
| 145 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ |
| 146 | return NULL; |
| 147 | /* ok, we can do it with the current plus the next page */ |
| 148 | if (nbytes <= sizeof(argp->tmp)) |
| 149 | p = argp->tmp; |
| 150 | else { |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 151 | kfree(argp->tmpp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
| 153 | if (!p) |
| 154 | return NULL; |
| 155 | |
| 156 | } |
J. Bruce Fields | ca2a05a | 2007-11-11 15:43:12 -0500 | [diff] [blame] | 157 | /* |
| 158 | * The following memcpy is safe because read_buf is always |
| 159 | * called with nbytes > avail, and the two cases above both |
| 160 | * guarantee p points to at least nbytes bytes. |
| 161 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | memcpy(p, argp->p, avail); |
| 163 | /* step to next page */ |
| 164 | argp->p = page_address(argp->pagelist[0]); |
| 165 | argp->pagelist++; |
| 166 | if (argp->pagelen < PAGE_SIZE) { |
Neil Brown | 2bc3c11 | 2010-04-20 12:16:52 +1000 | [diff] [blame] | 167 | argp->end = argp->p + (argp->pagelen>>2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | argp->pagelen = 0; |
| 169 | } else { |
Neil Brown | 2bc3c11 | 2010-04-20 12:16:52 +1000 | [diff] [blame] | 170 | argp->end = argp->p + (PAGE_SIZE>>2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | argp->pagelen -= PAGE_SIZE; |
| 172 | } |
| 173 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
| 174 | argp->p += XDR_QUADLEN(nbytes - avail); |
| 175 | return p; |
| 176 | } |
| 177 | |
Andy Adamson | 60adfc5 | 2009-04-03 08:28:50 +0300 | [diff] [blame] | 178 | static int zero_clientid(clientid_t *clid) |
| 179 | { |
| 180 | return (clid->cl_boot == 0) && (clid->cl_id == 0); |
| 181 | } |
| 182 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | static int |
| 184 | defer_free(struct nfsd4_compoundargs *argp, |
| 185 | void (*release)(const void *), void *p) |
| 186 | { |
| 187 | struct tmpbuf *tb; |
| 188 | |
| 189 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); |
| 190 | if (!tb) |
| 191 | return -ENOMEM; |
| 192 | tb->buf = p; |
| 193 | tb->release = release; |
| 194 | tb->next = argp->to_free; |
| 195 | argp->to_free = tb; |
| 196 | return 0; |
| 197 | } |
| 198 | |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 199 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | if (p == argp->tmp) { |
Thomas Meyer | 67114fe | 2011-11-17 23:43:40 +0100 | [diff] [blame] | 202 | p = kmemdup(argp->tmp, nbytes, GFP_KERNEL); |
J. Bruce Fields | a4db5fe | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 203 | if (!p) |
| 204 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | } else { |
Eric Sesterhenn | 73dff8b | 2006-10-03 23:37:14 +0200 | [diff] [blame] | 206 | BUG_ON(p != argp->tmpp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | argp->tmpp = NULL; |
| 208 | } |
| 209 | if (defer_free(argp, kfree, p)) { |
J. Bruce Fields | a4db5fe | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 210 | kfree(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | return NULL; |
| 212 | } else |
| 213 | return (char *)p; |
| 214 | } |
| 215 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 216 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
| 218 | { |
| 219 | u32 bmlen; |
| 220 | DECODE_HEAD; |
| 221 | |
| 222 | bmval[0] = 0; |
| 223 | bmval[1] = 0; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 224 | bmval[2] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | |
| 226 | READ_BUF(4); |
| 227 | READ32(bmlen); |
| 228 | if (bmlen > 1000) |
| 229 | goto xdr_error; |
| 230 | |
| 231 | READ_BUF(bmlen << 2); |
| 232 | if (bmlen > 0) |
| 233 | READ32(bmval[0]); |
| 234 | if (bmlen > 1) |
| 235 | READ32(bmval[1]); |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 236 | if (bmlen > 2) |
| 237 | READ32(bmval[2]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | |
| 239 | DECODE_TAIL; |
| 240 | } |
| 241 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 242 | static __be32 |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 243 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
Benny Halevy | c0d6fc8 | 2009-04-03 08:29:05 +0300 | [diff] [blame] | 244 | struct iattr *iattr, struct nfs4_acl **acl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | { |
| 246 | int expected_len, len = 0; |
| 247 | u32 dummy32; |
| 248 | char *buf; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 249 | int host_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | |
| 251 | DECODE_HEAD; |
| 252 | iattr->ia_valid = 0; |
| 253 | if ((status = nfsd4_decode_bitmap(argp, bmval))) |
| 254 | return status; |
| 255 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | READ_BUF(4); |
| 257 | READ32(expected_len); |
| 258 | |
| 259 | if (bmval[0] & FATTR4_WORD0_SIZE) { |
| 260 | READ_BUF(8); |
| 261 | len += 8; |
| 262 | READ64(iattr->ia_size); |
| 263 | iattr->ia_valid |= ATTR_SIZE; |
| 264 | } |
| 265 | if (bmval[0] & FATTR4_WORD0_ACL) { |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 266 | int nace; |
| 267 | struct nfs4_ace *ace; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
| 269 | READ_BUF(4); len += 4; |
| 270 | READ32(nace); |
| 271 | |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 272 | if (nace > NFS4_ACL_MAX) |
| 273 | return nfserr_resource; |
| 274 | |
| 275 | *acl = nfs4_acl_new(nace); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | if (*acl == NULL) { |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 277 | host_err = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | goto out_nfserr; |
| 279 | } |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 280 | defer_free(argp, kfree, *acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 282 | (*acl)->naces = nace; |
| 283 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | READ_BUF(16); len += 16; |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 285 | READ32(ace->type); |
| 286 | READ32(ace->flag); |
| 287 | READ32(ace->access_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | READ32(dummy32); |
| 289 | READ_BUF(dummy32); |
| 290 | len += XDR_QUADLEN(dummy32) << 2; |
| 291 | READMEM(buf, dummy32); |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 292 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
J. Bruce Fields | 3c72602 | 2011-01-04 17:53:52 -0500 | [diff] [blame] | 293 | status = nfs_ok; |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 294 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
| 295 | ace->who = 0; |
| 296 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
J. Bruce Fields | 3c72602 | 2011-01-04 17:53:52 -0500 | [diff] [blame] | 297 | status = nfsd_map_name_to_gid(argp->rqstp, |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 298 | buf, dummy32, &ace->who); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | else |
J. Bruce Fields | 3c72602 | 2011-01-04 17:53:52 -0500 | [diff] [blame] | 300 | status = nfsd_map_name_to_uid(argp->rqstp, |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 301 | buf, dummy32, &ace->who); |
J. Bruce Fields | 3c72602 | 2011-01-04 17:53:52 -0500 | [diff] [blame] | 302 | if (status) |
| 303 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | } |
| 305 | } else |
| 306 | *acl = NULL; |
| 307 | if (bmval[1] & FATTR4_WORD1_MODE) { |
| 308 | READ_BUF(4); |
| 309 | len += 4; |
| 310 | READ32(iattr->ia_mode); |
| 311 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
| 312 | iattr->ia_valid |= ATTR_MODE; |
| 313 | } |
| 314 | if (bmval[1] & FATTR4_WORD1_OWNER) { |
| 315 | READ_BUF(4); |
| 316 | len += 4; |
| 317 | READ32(dummy32); |
| 318 | READ_BUF(dummy32); |
| 319 | len += (XDR_QUADLEN(dummy32) << 2); |
| 320 | READMEM(buf, dummy32); |
NeilBrown | 47c8529 | 2011-02-16 13:08:35 +1100 | [diff] [blame] | 321 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
| 322 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | iattr->ia_valid |= ATTR_UID; |
| 324 | } |
| 325 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { |
| 326 | READ_BUF(4); |
| 327 | len += 4; |
| 328 | READ32(dummy32); |
| 329 | READ_BUF(dummy32); |
| 330 | len += (XDR_QUADLEN(dummy32) << 2); |
| 331 | READMEM(buf, dummy32); |
NeilBrown | 47c8529 | 2011-02-16 13:08:35 +1100 | [diff] [blame] | 332 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
| 333 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | iattr->ia_valid |= ATTR_GID; |
| 335 | } |
| 336 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { |
| 337 | READ_BUF(4); |
| 338 | len += 4; |
| 339 | READ32(dummy32); |
| 340 | switch (dummy32) { |
| 341 | case NFS4_SET_TO_CLIENT_TIME: |
| 342 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore |
| 343 | all 32 bits of 'nseconds'. */ |
| 344 | READ_BUF(12); |
| 345 | len += 12; |
| 346 | READ32(dummy32); |
| 347 | if (dummy32) |
| 348 | return nfserr_inval; |
| 349 | READ32(iattr->ia_atime.tv_sec); |
| 350 | READ32(iattr->ia_atime.tv_nsec); |
| 351 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) |
| 352 | return nfserr_inval; |
| 353 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); |
| 354 | break; |
| 355 | case NFS4_SET_TO_SERVER_TIME: |
| 356 | iattr->ia_valid |= ATTR_ATIME; |
| 357 | break; |
| 358 | default: |
| 359 | goto xdr_error; |
| 360 | } |
| 361 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
| 363 | READ_BUF(4); |
| 364 | len += 4; |
| 365 | READ32(dummy32); |
| 366 | switch (dummy32) { |
| 367 | case NFS4_SET_TO_CLIENT_TIME: |
| 368 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore |
| 369 | all 32 bits of 'nseconds'. */ |
| 370 | READ_BUF(12); |
| 371 | len += 12; |
| 372 | READ32(dummy32); |
| 373 | if (dummy32) |
| 374 | return nfserr_inval; |
| 375 | READ32(iattr->ia_mtime.tv_sec); |
| 376 | READ32(iattr->ia_mtime.tv_nsec); |
| 377 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) |
| 378 | return nfserr_inval; |
| 379 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); |
| 380 | break; |
| 381 | case NFS4_SET_TO_SERVER_TIME: |
| 382 | iattr->ia_valid |= ATTR_MTIME; |
| 383 | break; |
| 384 | default: |
| 385 | goto xdr_error; |
| 386 | } |
| 387 | } |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 388 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
| 389 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 |
| 390 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) |
| 391 | READ_BUF(expected_len - len); |
| 392 | else if (len != expected_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | goto xdr_error; |
| 394 | |
| 395 | DECODE_TAIL; |
| 396 | |
| 397 | out_nfserr: |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 398 | status = nfserrno(host_err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | goto out; |
| 400 | } |
| 401 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 402 | static __be32 |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 403 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) |
| 404 | { |
| 405 | DECODE_HEAD; |
| 406 | |
| 407 | READ_BUF(sizeof(stateid_t)); |
| 408 | READ32(sid->si_generation); |
| 409 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
| 410 | |
| 411 | DECODE_TAIL; |
| 412 | } |
| 413 | |
| 414 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
| 416 | { |
| 417 | DECODE_HEAD; |
| 418 | |
| 419 | READ_BUF(4); |
| 420 | READ32(access->ac_req_access); |
| 421 | |
| 422 | DECODE_TAIL; |
| 423 | } |
| 424 | |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 425 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
| 426 | { |
| 427 | DECODE_HEAD; |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 428 | |
| 429 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); |
| 430 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 431 | READ32(bcts->dir); |
Bryan Schumaker | 6ce2357 | 2011-04-27 15:47:16 -0400 | [diff] [blame] | 432 | /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker |
| 433 | * could help us figure out we should be using it. */ |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 434 | DECODE_TAIL; |
| 435 | } |
| 436 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 437 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
| 439 | { |
| 440 | DECODE_HEAD; |
| 441 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 442 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | READ32(close->cl_seqid); |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 444 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | |
| 446 | DECODE_TAIL; |
| 447 | } |
| 448 | |
| 449 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 450 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
| 452 | { |
| 453 | DECODE_HEAD; |
| 454 | |
| 455 | READ_BUF(12); |
| 456 | READ64(commit->co_offset); |
| 457 | READ32(commit->co_count); |
| 458 | |
| 459 | DECODE_TAIL; |
| 460 | } |
| 461 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 462 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
| 464 | { |
| 465 | DECODE_HEAD; |
| 466 | |
| 467 | READ_BUF(4); |
| 468 | READ32(create->cr_type); |
| 469 | switch (create->cr_type) { |
| 470 | case NF4LNK: |
| 471 | READ_BUF(4); |
| 472 | READ32(create->cr_linklen); |
| 473 | READ_BUF(create->cr_linklen); |
| 474 | SAVEMEM(create->cr_linkname, create->cr_linklen); |
| 475 | break; |
| 476 | case NF4BLK: |
| 477 | case NF4CHR: |
| 478 | READ_BUF(8); |
| 479 | READ32(create->cr_specdata1); |
| 480 | READ32(create->cr_specdata2); |
| 481 | break; |
| 482 | case NF4SOCK: |
| 483 | case NF4FIFO: |
| 484 | case NF4DIR: |
| 485 | default: |
| 486 | break; |
| 487 | } |
| 488 | |
| 489 | READ_BUF(4); |
| 490 | READ32(create->cr_namelen); |
| 491 | READ_BUF(create->cr_namelen); |
| 492 | SAVEMEM(create->cr_name, create->cr_namelen); |
| 493 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) |
| 494 | return status; |
| 495 | |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 496 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
| 497 | &create->cr_acl); |
Benny Halevy | c0d6fc8 | 2009-04-03 08:29:05 +0300 | [diff] [blame] | 498 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | goto out; |
| 500 | |
| 501 | DECODE_TAIL; |
| 502 | } |
| 503 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 504 | static inline __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
| 506 | { |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 507 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | } |
| 509 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 510 | static inline __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
| 512 | { |
| 513 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); |
| 514 | } |
| 515 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 516 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
| 518 | { |
| 519 | DECODE_HEAD; |
| 520 | |
| 521 | READ_BUF(4); |
| 522 | READ32(link->li_namelen); |
| 523 | READ_BUF(link->li_namelen); |
| 524 | SAVEMEM(link->li_name, link->li_namelen); |
| 525 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) |
| 526 | return status; |
| 527 | |
| 528 | DECODE_TAIL; |
| 529 | } |
| 530 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 531 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
| 533 | { |
| 534 | DECODE_HEAD; |
| 535 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | /* |
| 537 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) |
| 538 | */ |
| 539 | READ_BUF(28); |
| 540 | READ32(lock->lk_type); |
| 541 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
| 542 | goto xdr_error; |
| 543 | READ32(lock->lk_reclaim); |
| 544 | READ64(lock->lk_offset); |
| 545 | READ64(lock->lk_length); |
| 546 | READ32(lock->lk_is_new); |
| 547 | |
| 548 | if (lock->lk_is_new) { |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 549 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | READ32(lock->lk_new_open_seqid); |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 551 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
| 552 | if (status) |
| 553 | return status; |
| 554 | READ_BUF(8 + sizeof(clientid_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | READ32(lock->lk_new_lock_seqid); |
| 556 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
| 557 | READ32(lock->lk_new_owner.len); |
| 558 | READ_BUF(lock->lk_new_owner.len); |
| 559 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); |
| 560 | } else { |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 561 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
| 562 | if (status) |
| 563 | return status; |
| 564 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | READ32(lock->lk_old_lock_seqid); |
| 566 | } |
| 567 | |
| 568 | DECODE_TAIL; |
| 569 | } |
| 570 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 571 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
| 573 | { |
| 574 | DECODE_HEAD; |
| 575 | |
| 576 | READ_BUF(32); |
| 577 | READ32(lockt->lt_type); |
| 578 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
| 579 | goto xdr_error; |
| 580 | READ64(lockt->lt_offset); |
| 581 | READ64(lockt->lt_length); |
| 582 | COPYMEM(&lockt->lt_clientid, 8); |
| 583 | READ32(lockt->lt_owner.len); |
| 584 | READ_BUF(lockt->lt_owner.len); |
| 585 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); |
| 586 | |
| 587 | DECODE_TAIL; |
| 588 | } |
| 589 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 590 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
| 592 | { |
| 593 | DECODE_HEAD; |
| 594 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 595 | READ_BUF(8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | READ32(locku->lu_type); |
| 597 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
| 598 | goto xdr_error; |
| 599 | READ32(locku->lu_seqid); |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 600 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
| 601 | if (status) |
| 602 | return status; |
| 603 | READ_BUF(16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | READ64(locku->lu_offset); |
| 605 | READ64(locku->lu_length); |
| 606 | |
| 607 | DECODE_TAIL; |
| 608 | } |
| 609 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 610 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
| 612 | { |
| 613 | DECODE_HEAD; |
| 614 | |
| 615 | READ_BUF(4); |
| 616 | READ32(lookup->lo_len); |
| 617 | READ_BUF(lookup->lo_len); |
| 618 | SAVEMEM(lookup->lo_name, lookup->lo_len); |
| 619 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) |
| 620 | return status; |
| 621 | |
| 622 | DECODE_TAIL; |
| 623 | } |
| 624 | |
Benny Halevy | 2c8bd7e | 2012-02-16 20:57:09 +0200 | [diff] [blame] | 625 | static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) |
J. Bruce Fields | 04f9e66 | 2011-10-10 14:37:13 -0400 | [diff] [blame] | 626 | { |
| 627 | __be32 *p; |
| 628 | u32 w; |
| 629 | |
| 630 | READ_BUF(4); |
| 631 | READ32(w); |
Benny Halevy | 2c8bd7e | 2012-02-16 20:57:09 +0200 | [diff] [blame] | 632 | *share_access = w & NFS4_SHARE_ACCESS_MASK; |
| 633 | *deleg_want = w & NFS4_SHARE_WANT_MASK; |
| 634 | if (deleg_when) |
| 635 | *deleg_when = w & NFS4_SHARE_WHEN_MASK; |
| 636 | |
J. Bruce Fields | 04f9e66 | 2011-10-10 14:37:13 -0400 | [diff] [blame] | 637 | switch (w & NFS4_SHARE_ACCESS_MASK) { |
| 638 | case NFS4_SHARE_ACCESS_READ: |
| 639 | case NFS4_SHARE_ACCESS_WRITE: |
| 640 | case NFS4_SHARE_ACCESS_BOTH: |
| 641 | break; |
| 642 | default: |
| 643 | return nfserr_bad_xdr; |
| 644 | } |
Benny Halevy | fc0d14f | 2011-10-27 20:43:01 +0200 | [diff] [blame] | 645 | w &= ~NFS4_SHARE_ACCESS_MASK; |
J. Bruce Fields | 04f9e66 | 2011-10-10 14:37:13 -0400 | [diff] [blame] | 646 | if (!w) |
| 647 | return nfs_ok; |
| 648 | if (!argp->minorversion) |
| 649 | return nfserr_bad_xdr; |
| 650 | switch (w & NFS4_SHARE_WANT_MASK) { |
| 651 | case NFS4_SHARE_WANT_NO_PREFERENCE: |
| 652 | case NFS4_SHARE_WANT_READ_DELEG: |
| 653 | case NFS4_SHARE_WANT_WRITE_DELEG: |
| 654 | case NFS4_SHARE_WANT_ANY_DELEG: |
| 655 | case NFS4_SHARE_WANT_NO_DELEG: |
| 656 | case NFS4_SHARE_WANT_CANCEL: |
| 657 | break; |
| 658 | default: |
| 659 | return nfserr_bad_xdr; |
| 660 | } |
Benny Halevy | 92bac8c | 2011-10-19 19:13:29 -0700 | [diff] [blame] | 661 | w &= ~NFS4_SHARE_WANT_MASK; |
J. Bruce Fields | 04f9e66 | 2011-10-10 14:37:13 -0400 | [diff] [blame] | 662 | if (!w) |
| 663 | return nfs_ok; |
Benny Halevy | 2c8bd7e | 2012-02-16 20:57:09 +0200 | [diff] [blame] | 664 | |
| 665 | if (!deleg_when) /* open_downgrade */ |
| 666 | return nfserr_inval; |
J. Bruce Fields | 04f9e66 | 2011-10-10 14:37:13 -0400 | [diff] [blame] | 667 | switch (w) { |
| 668 | case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: |
| 669 | case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: |
Benny Halevy | c668fc6 | 2011-10-19 19:13:13 -0700 | [diff] [blame] | 670 | case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | |
| 671 | NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): |
J. Bruce Fields | 04f9e66 | 2011-10-10 14:37:13 -0400 | [diff] [blame] | 672 | return nfs_ok; |
| 673 | } |
| 674 | xdr_error: |
| 675 | return nfserr_bad_xdr; |
| 676 | } |
| 677 | |
| 678 | static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) |
| 679 | { |
| 680 | __be32 *p; |
| 681 | |
| 682 | READ_BUF(4); |
| 683 | READ32(*x); |
| 684 | /* Note: unlinke access bits, deny bits may be zero. */ |
Dan Carpenter | 01cd4afa | 2011-10-17 10:41:17 +0300 | [diff] [blame] | 685 | if (*x & ~NFS4_SHARE_DENY_BOTH) |
J. Bruce Fields | 04f9e66 | 2011-10-10 14:37:13 -0400 | [diff] [blame] | 686 | return nfserr_bad_xdr; |
| 687 | return nfs_ok; |
| 688 | xdr_error: |
| 689 | return nfserr_bad_xdr; |
| 690 | } |
| 691 | |
J. Bruce Fields | a084daf | 2011-10-10 15:07:40 -0400 | [diff] [blame] | 692 | static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) |
| 693 | { |
| 694 | __be32 *p; |
| 695 | |
| 696 | READ_BUF(4); |
| 697 | READ32(o->len); |
| 698 | |
| 699 | if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) |
| 700 | return nfserr_bad_xdr; |
| 701 | |
| 702 | READ_BUF(o->len); |
| 703 | SAVEMEM(o->data, o->len); |
| 704 | return nfs_ok; |
| 705 | xdr_error: |
| 706 | return nfserr_bad_xdr; |
| 707 | } |
| 708 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 709 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
| 711 | { |
| 712 | DECODE_HEAD; |
Benny Halevy | 2c8bd7e | 2012-02-16 20:57:09 +0200 | [diff] [blame] | 713 | u32 dummy; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | |
| 715 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); |
| 716 | open->op_iattr.ia_valid = 0; |
J. Bruce Fields | fe0750e | 2011-07-30 23:33:59 -0400 | [diff] [blame] | 717 | open->op_openowner = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | |
| 719 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
J. Bruce Fields | 04f9e66 | 2011-10-10 14:37:13 -0400 | [diff] [blame] | 720 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | READ32(open->op_seqid); |
Benny Halevy | 2c8bd7e | 2012-02-16 20:57:09 +0200 | [diff] [blame] | 722 | /* decode, yet ignore deleg_when until supported */ |
| 723 | status = nfsd4_decode_share_access(argp, &open->op_share_access, |
| 724 | &open->op_deleg_want, &dummy); |
J. Bruce Fields | 04f9e66 | 2011-10-10 14:37:13 -0400 | [diff] [blame] | 725 | if (status) |
| 726 | goto xdr_error; |
| 727 | status = nfsd4_decode_share_deny(argp, &open->op_share_deny); |
| 728 | if (status) |
| 729 | goto xdr_error; |
J. Bruce Fields | a084daf | 2011-10-10 15:07:40 -0400 | [diff] [blame] | 730 | READ_BUF(sizeof(clientid_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
J. Bruce Fields | a084daf | 2011-10-10 15:07:40 -0400 | [diff] [blame] | 732 | status = nfsd4_decode_opaque(argp, &open->op_owner); |
| 733 | if (status) |
| 734 | goto xdr_error; |
| 735 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | READ32(open->op_create); |
| 737 | switch (open->op_create) { |
| 738 | case NFS4_OPEN_NOCREATE: |
| 739 | break; |
| 740 | case NFS4_OPEN_CREATE: |
| 741 | READ_BUF(4); |
| 742 | READ32(open->op_createmode); |
| 743 | switch (open->op_createmode) { |
| 744 | case NFS4_CREATE_UNCHECKED: |
| 745 | case NFS4_CREATE_GUARDED: |
Benny Halevy | c0d6fc8 | 2009-04-03 08:29:05 +0300 | [diff] [blame] | 746 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 747 | &open->op_iattr, &open->op_acl); |
Benny Halevy | c0d6fc8 | 2009-04-03 08:29:05 +0300 | [diff] [blame] | 748 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | goto out; |
| 750 | break; |
| 751 | case NFS4_CREATE_EXCLUSIVE: |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 752 | READ_BUF(NFS4_VERIFIER_SIZE); |
| 753 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | break; |
Benny Halevy | 79fb54a | 2009-04-03 08:29:17 +0300 | [diff] [blame] | 755 | case NFS4_CREATE_EXCLUSIVE4_1: |
| 756 | if (argp->minorversion < 1) |
| 757 | goto xdr_error; |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 758 | READ_BUF(NFS4_VERIFIER_SIZE); |
| 759 | COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); |
Benny Halevy | 79fb54a | 2009-04-03 08:29:17 +0300 | [diff] [blame] | 760 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 761 | &open->op_iattr, &open->op_acl); |
Benny Halevy | 79fb54a | 2009-04-03 08:29:17 +0300 | [diff] [blame] | 762 | if (status) |
| 763 | goto out; |
| 764 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | default: |
| 766 | goto xdr_error; |
| 767 | } |
| 768 | break; |
| 769 | default: |
| 770 | goto xdr_error; |
| 771 | } |
| 772 | |
| 773 | /* open_claim */ |
| 774 | READ_BUF(4); |
| 775 | READ32(open->op_claim_type); |
| 776 | switch (open->op_claim_type) { |
| 777 | case NFS4_OPEN_CLAIM_NULL: |
| 778 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
| 779 | READ_BUF(4); |
| 780 | READ32(open->op_fname.len); |
| 781 | READ_BUF(open->op_fname.len); |
| 782 | SAVEMEM(open->op_fname.data, open->op_fname.len); |
| 783 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) |
| 784 | return status; |
| 785 | break; |
| 786 | case NFS4_OPEN_CLAIM_PREVIOUS: |
| 787 | READ_BUF(4); |
| 788 | READ32(open->op_delegate_type); |
| 789 | break; |
| 790 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 791 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
| 792 | if (status) |
| 793 | return status; |
| 794 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | READ32(open->op_fname.len); |
| 796 | READ_BUF(open->op_fname.len); |
| 797 | SAVEMEM(open->op_fname.data, open->op_fname.len); |
| 798 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) |
| 799 | return status; |
| 800 | break; |
J. Bruce Fields | 8b289b2 | 2011-10-19 11:52:12 -0400 | [diff] [blame] | 801 | case NFS4_OPEN_CLAIM_FH: |
| 802 | case NFS4_OPEN_CLAIM_DELEG_PREV_FH: |
| 803 | if (argp->minorversion < 1) |
| 804 | goto xdr_error; |
| 805 | /* void */ |
| 806 | break; |
| 807 | case NFS4_OPEN_CLAIM_DELEG_CUR_FH: |
| 808 | if (argp->minorversion < 1) |
| 809 | goto xdr_error; |
| 810 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
| 811 | if (status) |
| 812 | return status; |
| 813 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | default: |
| 815 | goto xdr_error; |
| 816 | } |
| 817 | |
| 818 | DECODE_TAIL; |
| 819 | } |
| 820 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 821 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
| 823 | { |
| 824 | DECODE_HEAD; |
| 825 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 826 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
| 827 | if (status) |
| 828 | return status; |
| 829 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | READ32(open_conf->oc_seqid); |
| 831 | |
| 832 | DECODE_TAIL; |
| 833 | } |
| 834 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 835 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
| 837 | { |
| 838 | DECODE_HEAD; |
| 839 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 840 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
| 841 | if (status) |
| 842 | return status; |
J. Bruce Fields | 04f9e66 | 2011-10-10 14:37:13 -0400 | [diff] [blame] | 843 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | READ32(open_down->od_seqid); |
Benny Halevy | 2c8bd7e | 2012-02-16 20:57:09 +0200 | [diff] [blame] | 845 | status = nfsd4_decode_share_access(argp, &open_down->od_share_access, |
| 846 | &open_down->od_deleg_want, NULL); |
J. Bruce Fields | 04f9e66 | 2011-10-10 14:37:13 -0400 | [diff] [blame] | 847 | if (status) |
| 848 | return status; |
| 849 | status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); |
| 850 | if (status) |
| 851 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | DECODE_TAIL; |
| 853 | } |
| 854 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 855 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
| 857 | { |
| 858 | DECODE_HEAD; |
| 859 | |
| 860 | READ_BUF(4); |
| 861 | READ32(putfh->pf_fhlen); |
| 862 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
| 863 | goto xdr_error; |
| 864 | READ_BUF(putfh->pf_fhlen); |
| 865 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); |
| 866 | |
| 867 | DECODE_TAIL; |
| 868 | } |
| 869 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 870 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
| 872 | { |
| 873 | DECODE_HEAD; |
| 874 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 875 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
| 876 | if (status) |
| 877 | return status; |
| 878 | READ_BUF(12); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | READ64(read->rd_offset); |
| 880 | READ32(read->rd_length); |
| 881 | |
| 882 | DECODE_TAIL; |
| 883 | } |
| 884 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 885 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
| 887 | { |
| 888 | DECODE_HEAD; |
| 889 | |
| 890 | READ_BUF(24); |
| 891 | READ64(readdir->rd_cookie); |
| 892 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
| 893 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ |
| 894 | READ32(readdir->rd_maxcount); |
| 895 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
| 896 | goto out; |
| 897 | |
| 898 | DECODE_TAIL; |
| 899 | } |
| 900 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 901 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
| 903 | { |
| 904 | DECODE_HEAD; |
| 905 | |
| 906 | READ_BUF(4); |
| 907 | READ32(remove->rm_namelen); |
| 908 | READ_BUF(remove->rm_namelen); |
| 909 | SAVEMEM(remove->rm_name, remove->rm_namelen); |
| 910 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) |
| 911 | return status; |
| 912 | |
| 913 | DECODE_TAIL; |
| 914 | } |
| 915 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 916 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
| 918 | { |
| 919 | DECODE_HEAD; |
| 920 | |
| 921 | READ_BUF(4); |
| 922 | READ32(rename->rn_snamelen); |
| 923 | READ_BUF(rename->rn_snamelen + 4); |
| 924 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); |
| 925 | READ32(rename->rn_tnamelen); |
| 926 | READ_BUF(rename->rn_tnamelen); |
| 927 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); |
| 928 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) |
| 929 | return status; |
| 930 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) |
| 931 | return status; |
| 932 | |
| 933 | DECODE_TAIL; |
| 934 | } |
| 935 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 936 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
| 938 | { |
| 939 | DECODE_HEAD; |
| 940 | |
| 941 | READ_BUF(sizeof(clientid_t)); |
| 942 | COPYMEM(clientid, sizeof(clientid_t)); |
| 943 | |
| 944 | DECODE_TAIL; |
| 945 | } |
| 946 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 947 | static __be32 |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 948 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, |
| 949 | struct nfsd4_secinfo *secinfo) |
| 950 | { |
| 951 | DECODE_HEAD; |
| 952 | |
| 953 | READ_BUF(4); |
| 954 | READ32(secinfo->si_namelen); |
| 955 | READ_BUF(secinfo->si_namelen); |
| 956 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); |
| 957 | status = check_filename(secinfo->si_name, secinfo->si_namelen, |
| 958 | nfserr_noent); |
| 959 | if (status) |
| 960 | return status; |
| 961 | DECODE_TAIL; |
| 962 | } |
| 963 | |
| 964 | static __be32 |
J. Bruce Fields | 04f4ad1 | 2010-12-16 09:51:13 -0500 | [diff] [blame] | 965 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, |
| 966 | struct nfsd4_secinfo_no_name *sin) |
| 967 | { |
| 968 | DECODE_HEAD; |
| 969 | |
| 970 | READ_BUF(4); |
| 971 | READ32(sin->sin_style); |
| 972 | DECODE_TAIL; |
| 973 | } |
| 974 | |
| 975 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
| 977 | { |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 978 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 980 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
| 981 | if (status) |
| 982 | return status; |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 983 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
| 984 | &setattr->sa_acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | } |
| 986 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 987 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
| 989 | { |
| 990 | DECODE_HEAD; |
| 991 | |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 992 | READ_BUF(NFS4_VERIFIER_SIZE); |
| 993 | COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | |
J. Bruce Fields | a084daf | 2011-10-10 15:07:40 -0400 | [diff] [blame] | 995 | status = nfsd4_decode_opaque(argp, &setclientid->se_name); |
| 996 | if (status) |
| 997 | return nfserr_bad_xdr; |
| 998 | READ_BUF(8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | READ32(setclientid->se_callback_prog); |
| 1000 | READ32(setclientid->se_callback_netid_len); |
| 1001 | |
| 1002 | READ_BUF(setclientid->se_callback_netid_len + 4); |
| 1003 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); |
| 1004 | READ32(setclientid->se_callback_addr_len); |
| 1005 | |
| 1006 | READ_BUF(setclientid->se_callback_addr_len + 4); |
| 1007 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); |
| 1008 | READ32(setclientid->se_callback_ident); |
| 1009 | |
| 1010 | DECODE_TAIL; |
| 1011 | } |
| 1012 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1013 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
| 1015 | { |
| 1016 | DECODE_HEAD; |
| 1017 | |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 1018 | READ_BUF(8 + NFS4_VERIFIER_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | COPYMEM(&scd_c->sc_clientid, 8); |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 1020 | COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | |
| 1022 | DECODE_TAIL; |
| 1023 | } |
| 1024 | |
| 1025 | /* Also used for NVERIFY */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1026 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
| 1028 | { |
| 1029 | #if 0 |
| 1030 | struct nfsd4_compoundargs save = { |
| 1031 | .p = argp->p, |
| 1032 | .end = argp->end, |
| 1033 | .rqstp = argp->rqstp, |
| 1034 | }; |
| 1035 | u32 ve_bmval[2]; |
| 1036 | struct iattr ve_iattr; /* request */ |
| 1037 | struct nfs4_acl *ve_acl; /* request */ |
| 1038 | #endif |
| 1039 | DECODE_HEAD; |
| 1040 | |
| 1041 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) |
| 1042 | goto out; |
| 1043 | |
| 1044 | /* For convenience's sake, we compare raw xdr'd attributes in |
| 1045 | * nfsd4_proc_verify; however we still decode here just to return |
| 1046 | * correct error in case of bad xdr. */ |
| 1047 | #if 0 |
| 1048 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); |
| 1049 | if (status == nfserr_inval) { |
| 1050 | status = nfserrno(status); |
| 1051 | goto out; |
| 1052 | } |
| 1053 | #endif |
| 1054 | READ_BUF(4); |
| 1055 | READ32(verify->ve_attrlen); |
| 1056 | READ_BUF(verify->ve_attrlen); |
| 1057 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); |
| 1058 | |
| 1059 | DECODE_TAIL; |
| 1060 | } |
| 1061 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1062 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
| 1064 | { |
| 1065 | int avail; |
| 1066 | int v; |
| 1067 | int len; |
| 1068 | DECODE_HEAD; |
| 1069 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 1070 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
| 1071 | if (status) |
| 1072 | return status; |
| 1073 | READ_BUF(16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | READ64(write->wr_offset); |
| 1075 | READ32(write->wr_stable_how); |
| 1076 | if (write->wr_stable_how > 2) |
| 1077 | goto xdr_error; |
| 1078 | READ32(write->wr_buflen); |
| 1079 | |
| 1080 | /* Sorry .. no magic macros for this.. * |
| 1081 | * READ_BUF(write->wr_buflen); |
| 1082 | * SAVEMEM(write->wr_buf, write->wr_buflen); |
| 1083 | */ |
| 1084 | avail = (char*)argp->end - (char*)argp->p; |
| 1085 | if (avail + argp->pagelen < write->wr_buflen) { |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 1086 | dprintk("NFSD: xdr error (%s:%d)\n", |
| 1087 | __FILE__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | goto xdr_error; |
| 1089 | } |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 1090 | argp->rqstp->rq_vec[0].iov_base = p; |
| 1091 | argp->rqstp->rq_vec[0].iov_len = avail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | v = 0; |
| 1093 | len = write->wr_buflen; |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 1094 | while (len > argp->rqstp->rq_vec[v].iov_len) { |
| 1095 | len -= argp->rqstp->rq_vec[v].iov_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | v++; |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 1097 | argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | argp->pagelist++; |
| 1099 | if (argp->pagelen >= PAGE_SIZE) { |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 1100 | argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | argp->pagelen -= PAGE_SIZE; |
| 1102 | } else { |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 1103 | argp->rqstp->rq_vec[v].iov_len = argp->pagelen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | argp->pagelen -= len; |
| 1105 | } |
| 1106 | } |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1107 | argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len); |
| 1108 | argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 1109 | argp->rqstp->rq_vec[v].iov_len = len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | write->wr_vlen = v+1; |
| 1111 | |
| 1112 | DECODE_TAIL; |
| 1113 | } |
| 1114 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1115 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
| 1117 | { |
| 1118 | DECODE_HEAD; |
| 1119 | |
| 1120 | READ_BUF(12); |
| 1121 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); |
| 1122 | READ32(rlockowner->rl_owner.len); |
| 1123 | READ_BUF(rlockowner->rl_owner.len); |
| 1124 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); |
| 1125 | |
Andy Adamson | 60adfc5 | 2009-04-03 08:28:50 +0300 | [diff] [blame] | 1126 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
| 1127 | return nfserr_inval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | DECODE_TAIL; |
| 1129 | } |
| 1130 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1131 | static __be32 |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1132 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1133 | struct nfsd4_exchange_id *exid) |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1134 | { |
Mi Jinlong | 5afa040 | 2010-11-09 09:39:23 +0800 | [diff] [blame] | 1135 | int dummy, tmp; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1136 | DECODE_HEAD; |
| 1137 | |
| 1138 | READ_BUF(NFS4_VERIFIER_SIZE); |
| 1139 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); |
| 1140 | |
J. Bruce Fields | a084daf | 2011-10-10 15:07:40 -0400 | [diff] [blame] | 1141 | status = nfsd4_decode_opaque(argp, &exid->clname); |
| 1142 | if (status) |
| 1143 | return nfserr_bad_xdr; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1144 | |
| 1145 | READ_BUF(4); |
| 1146 | READ32(exid->flags); |
| 1147 | |
| 1148 | /* Ignore state_protect4_a */ |
| 1149 | READ_BUF(4); |
| 1150 | READ32(exid->spa_how); |
| 1151 | switch (exid->spa_how) { |
| 1152 | case SP4_NONE: |
| 1153 | break; |
| 1154 | case SP4_MACH_CRED: |
| 1155 | /* spo_must_enforce */ |
| 1156 | READ_BUF(4); |
| 1157 | READ32(dummy); |
| 1158 | READ_BUF(dummy * 4); |
| 1159 | p += dummy; |
| 1160 | |
| 1161 | /* spo_must_allow */ |
| 1162 | READ_BUF(4); |
| 1163 | READ32(dummy); |
| 1164 | READ_BUF(dummy * 4); |
| 1165 | p += dummy; |
| 1166 | break; |
| 1167 | case SP4_SSV: |
| 1168 | /* ssp_ops */ |
| 1169 | READ_BUF(4); |
| 1170 | READ32(dummy); |
| 1171 | READ_BUF(dummy * 4); |
| 1172 | p += dummy; |
| 1173 | |
| 1174 | READ_BUF(4); |
| 1175 | READ32(dummy); |
| 1176 | READ_BUF(dummy * 4); |
| 1177 | p += dummy; |
| 1178 | |
| 1179 | /* ssp_hash_algs<> */ |
| 1180 | READ_BUF(4); |
Mi Jinlong | 5afa040 | 2010-11-09 09:39:23 +0800 | [diff] [blame] | 1181 | READ32(tmp); |
| 1182 | while (tmp--) { |
| 1183 | READ_BUF(4); |
| 1184 | READ32(dummy); |
| 1185 | READ_BUF(dummy); |
| 1186 | p += XDR_QUADLEN(dummy); |
| 1187 | } |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1188 | |
| 1189 | /* ssp_encr_algs<> */ |
| 1190 | READ_BUF(4); |
Mi Jinlong | 5afa040 | 2010-11-09 09:39:23 +0800 | [diff] [blame] | 1191 | READ32(tmp); |
| 1192 | while (tmp--) { |
| 1193 | READ_BUF(4); |
| 1194 | READ32(dummy); |
| 1195 | READ_BUF(dummy); |
| 1196 | p += XDR_QUADLEN(dummy); |
| 1197 | } |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1198 | |
| 1199 | /* ssp_window and ssp_num_gss_handles */ |
| 1200 | READ_BUF(8); |
| 1201 | READ32(dummy); |
| 1202 | READ32(dummy); |
| 1203 | break; |
| 1204 | default: |
| 1205 | goto xdr_error; |
| 1206 | } |
| 1207 | |
| 1208 | /* Ignore Implementation ID */ |
| 1209 | READ_BUF(4); /* nfs_impl_id4 array length */ |
| 1210 | READ32(dummy); |
| 1211 | |
| 1212 | if (dummy > 1) |
| 1213 | goto xdr_error; |
| 1214 | |
| 1215 | if (dummy == 1) { |
| 1216 | /* nii_domain */ |
| 1217 | READ_BUF(4); |
| 1218 | READ32(dummy); |
| 1219 | READ_BUF(dummy); |
| 1220 | p += XDR_QUADLEN(dummy); |
| 1221 | |
| 1222 | /* nii_name */ |
| 1223 | READ_BUF(4); |
| 1224 | READ32(dummy); |
| 1225 | READ_BUF(dummy); |
| 1226 | p += XDR_QUADLEN(dummy); |
| 1227 | |
| 1228 | /* nii_date */ |
| 1229 | READ_BUF(12); |
| 1230 | p += 3; |
| 1231 | } |
| 1232 | DECODE_TAIL; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1233 | } |
| 1234 | |
| 1235 | static __be32 |
| 1236 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, |
| 1237 | struct nfsd4_create_session *sess) |
| 1238 | { |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1239 | DECODE_HEAD; |
| 1240 | |
| 1241 | u32 dummy; |
| 1242 | char *machine_name; |
Mi Jinlong | 5a02ab7 | 2011-03-11 12:13:55 +0800 | [diff] [blame] | 1243 | int i; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1244 | int nr_secflavs; |
| 1245 | |
| 1246 | READ_BUF(16); |
| 1247 | COPYMEM(&sess->clientid, 8); |
| 1248 | READ32(sess->seqid); |
| 1249 | READ32(sess->flags); |
| 1250 | |
| 1251 | /* Fore channel attrs */ |
| 1252 | READ_BUF(28); |
| 1253 | READ32(dummy); /* headerpadsz is always 0 */ |
| 1254 | READ32(sess->fore_channel.maxreq_sz); |
| 1255 | READ32(sess->fore_channel.maxresp_sz); |
| 1256 | READ32(sess->fore_channel.maxresp_cached); |
| 1257 | READ32(sess->fore_channel.maxops); |
| 1258 | READ32(sess->fore_channel.maxreqs); |
| 1259 | READ32(sess->fore_channel.nr_rdma_attrs); |
| 1260 | if (sess->fore_channel.nr_rdma_attrs == 1) { |
| 1261 | READ_BUF(4); |
| 1262 | READ32(sess->fore_channel.rdma_attrs); |
| 1263 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { |
| 1264 | dprintk("Too many fore channel attr bitmaps!\n"); |
| 1265 | goto xdr_error; |
| 1266 | } |
| 1267 | |
| 1268 | /* Back channel attrs */ |
| 1269 | READ_BUF(28); |
| 1270 | READ32(dummy); /* headerpadsz is always 0 */ |
| 1271 | READ32(sess->back_channel.maxreq_sz); |
| 1272 | READ32(sess->back_channel.maxresp_sz); |
| 1273 | READ32(sess->back_channel.maxresp_cached); |
| 1274 | READ32(sess->back_channel.maxops); |
| 1275 | READ32(sess->back_channel.maxreqs); |
| 1276 | READ32(sess->back_channel.nr_rdma_attrs); |
| 1277 | if (sess->back_channel.nr_rdma_attrs == 1) { |
| 1278 | READ_BUF(4); |
| 1279 | READ32(sess->back_channel.rdma_attrs); |
| 1280 | } else if (sess->back_channel.nr_rdma_attrs > 1) { |
| 1281 | dprintk("Too many back channel attr bitmaps!\n"); |
| 1282 | goto xdr_error; |
| 1283 | } |
| 1284 | |
| 1285 | READ_BUF(8); |
| 1286 | READ32(sess->callback_prog); |
| 1287 | |
| 1288 | /* callback_sec_params4 */ |
| 1289 | READ32(nr_secflavs); |
| 1290 | for (i = 0; i < nr_secflavs; ++i) { |
| 1291 | READ_BUF(4); |
| 1292 | READ32(dummy); |
| 1293 | switch (dummy) { |
| 1294 | case RPC_AUTH_NULL: |
| 1295 | /* Nothing to read */ |
| 1296 | break; |
| 1297 | case RPC_AUTH_UNIX: |
| 1298 | READ_BUF(8); |
| 1299 | /* stamp */ |
| 1300 | READ32(dummy); |
| 1301 | |
| 1302 | /* machine name */ |
| 1303 | READ32(dummy); |
| 1304 | READ_BUF(dummy); |
| 1305 | SAVEMEM(machine_name, dummy); |
| 1306 | |
| 1307 | /* uid, gid */ |
| 1308 | READ_BUF(8); |
| 1309 | READ32(sess->uid); |
| 1310 | READ32(sess->gid); |
| 1311 | |
| 1312 | /* more gids */ |
| 1313 | READ_BUF(4); |
| 1314 | READ32(dummy); |
| 1315 | READ_BUF(dummy * 4); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1316 | break; |
| 1317 | case RPC_AUTH_GSS: |
| 1318 | dprintk("RPC_AUTH_GSS callback secflavor " |
| 1319 | "not supported!\n"); |
| 1320 | READ_BUF(8); |
| 1321 | /* gcbp_service */ |
| 1322 | READ32(dummy); |
| 1323 | /* gcbp_handle_from_server */ |
| 1324 | READ32(dummy); |
| 1325 | READ_BUF(dummy); |
| 1326 | p += XDR_QUADLEN(dummy); |
| 1327 | /* gcbp_handle_from_client */ |
| 1328 | READ_BUF(4); |
| 1329 | READ32(dummy); |
| 1330 | READ_BUF(dummy); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1331 | break; |
| 1332 | default: |
| 1333 | dprintk("Illegal callback secflavor\n"); |
| 1334 | return nfserr_inval; |
| 1335 | } |
| 1336 | } |
| 1337 | DECODE_TAIL; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1338 | } |
| 1339 | |
| 1340 | static __be32 |
| 1341 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, |
| 1342 | struct nfsd4_destroy_session *destroy_session) |
| 1343 | { |
Benny Halevy | e10e0cf | 2009-04-03 08:28:38 +0300 | [diff] [blame] | 1344 | DECODE_HEAD; |
| 1345 | READ_BUF(NFS4_MAX_SESSIONID_LEN); |
| 1346 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 1347 | |
| 1348 | DECODE_TAIL; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1349 | } |
| 1350 | |
| 1351 | static __be32 |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 1352 | nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, |
| 1353 | struct nfsd4_free_stateid *free_stateid) |
| 1354 | { |
| 1355 | DECODE_HEAD; |
| 1356 | |
| 1357 | READ_BUF(sizeof(stateid_t)); |
| 1358 | READ32(free_stateid->fr_stateid.si_generation); |
| 1359 | COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); |
| 1360 | |
| 1361 | DECODE_TAIL; |
| 1362 | } |
| 1363 | |
| 1364 | static __be32 |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1365 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, |
| 1366 | struct nfsd4_sequence *seq) |
| 1367 | { |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 1368 | DECODE_HEAD; |
| 1369 | |
| 1370 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); |
| 1371 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 1372 | READ32(seq->seqid); |
| 1373 | READ32(seq->slotid); |
| 1374 | READ32(seq->maxslots); |
| 1375 | READ32(seq->cachethis); |
| 1376 | |
| 1377 | DECODE_TAIL; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1378 | } |
| 1379 | |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 1380 | static __be32 |
| 1381 | nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) |
| 1382 | { |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 1383 | int i; |
Bryan Schumaker | 03cfb42 | 2012-01-27 10:22:49 -0500 | [diff] [blame] | 1384 | __be32 *p, status; |
| 1385 | struct nfsd4_test_stateid_id *stateid; |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 1386 | |
| 1387 | READ_BUF(4); |
| 1388 | test_stateid->ts_num_ids = ntohl(*p++); |
| 1389 | |
Bryan Schumaker | 03cfb42 | 2012-01-27 10:22:49 -0500 | [diff] [blame] | 1390 | INIT_LIST_HEAD(&test_stateid->ts_stateid_list); |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 1391 | |
| 1392 | for (i = 0; i < test_stateid->ts_num_ids; i++) { |
Bryan Schumaker | 03cfb42 | 2012-01-27 10:22:49 -0500 | [diff] [blame] | 1393 | stateid = kmalloc(sizeof(struct nfsd4_test_stateid_id), GFP_KERNEL); |
| 1394 | if (!stateid) { |
| 1395 | status = PTR_ERR(stateid); |
| 1396 | goto out; |
| 1397 | } |
| 1398 | |
| 1399 | defer_free(argp, kfree, stateid); |
| 1400 | INIT_LIST_HEAD(&stateid->ts_id_list); |
| 1401 | list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); |
| 1402 | |
| 1403 | status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 1404 | if (status) |
Bryan Schumaker | 03cfb42 | 2012-01-27 10:22:49 -0500 | [diff] [blame] | 1405 | goto out; |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 1406 | } |
| 1407 | |
| 1408 | status = 0; |
| 1409 | out: |
| 1410 | return status; |
| 1411 | xdr_error: |
| 1412 | dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); |
| 1413 | status = nfserr_bad_xdr; |
| 1414 | goto out; |
| 1415 | } |
| 1416 | |
Mi Jinlong | 345c284 | 2011-10-20 17:51:39 +0800 | [diff] [blame] | 1417 | static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) |
| 1418 | { |
| 1419 | DECODE_HEAD; |
| 1420 | |
| 1421 | READ_BUF(8); |
| 1422 | COPYMEM(&dc->clientid, 8); |
| 1423 | |
| 1424 | DECODE_TAIL; |
| 1425 | } |
| 1426 | |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 1427 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
| 1428 | { |
| 1429 | DECODE_HEAD; |
| 1430 | |
| 1431 | READ_BUF(4); |
| 1432 | READ32(rc->rca_one_fs); |
| 1433 | |
| 1434 | DECODE_TAIL; |
| 1435 | } |
| 1436 | |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1437 | static __be32 |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1438 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) |
| 1439 | { |
| 1440 | return nfs_ok; |
| 1441 | } |
| 1442 | |
Benny Halevy | 3c375c6 | 2008-07-02 11:14:01 +0300 | [diff] [blame] | 1443 | static __be32 |
| 1444 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) |
| 1445 | { |
Benny Halevy | 1e685ec | 2009-03-04 23:06:06 +0200 | [diff] [blame] | 1446 | return nfserr_notsupp; |
Benny Halevy | 3c375c6 | 2008-07-02 11:14:01 +0300 | [diff] [blame] | 1447 | } |
| 1448 | |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1449 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
| 1450 | |
| 1451 | static nfsd4_dec nfsd4_dec_ops[] = { |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 1452 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
| 1453 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, |
| 1454 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, |
| 1455 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, |
| 1456 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1457 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, |
| 1458 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, |
| 1459 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1460 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, |
| 1461 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, |
| 1462 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, |
| 1463 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, |
| 1464 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, |
| 1465 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, |
| 1466 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, |
| 1467 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, |
| 1468 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1469 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, |
| 1470 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, |
| 1471 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, |
J. Bruce Fields | a1c8c4d | 2009-03-09 12:17:29 -0400 | [diff] [blame] | 1472 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 1473 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1474 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, |
| 1475 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, |
| 1476 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, |
| 1477 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, |
| 1478 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, |
| 1479 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, |
| 1480 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1481 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1482 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, |
| 1483 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, |
| 1484 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, |
| 1485 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, |
| 1486 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, |
| 1487 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, |
| 1488 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1489 | }; |
| 1490 | |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1491 | static nfsd4_dec nfsd41_dec_ops[] = { |
Randy Dunlap | 9064caa | 2009-04-28 16:48:25 -0700 | [diff] [blame] | 1492 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
| 1493 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, |
| 1494 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, |
| 1495 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, |
| 1496 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1497 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, |
| 1498 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, |
| 1499 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1500 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, |
| 1501 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, |
| 1502 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, |
| 1503 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, |
| 1504 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, |
| 1505 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, |
| 1506 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, |
| 1507 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, |
| 1508 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1509 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1510 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, |
| 1511 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, |
| 1512 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1513 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1514 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, |
| 1515 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, |
| 1516 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, |
| 1517 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, |
| 1518 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, |
| 1519 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1520 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1521 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1522 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, |
| 1523 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, |
| 1524 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1525 | [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp, |
| 1526 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, |
| 1527 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, |
| 1528 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1529 | |
| 1530 | /* new operations for NFSv4.1 */ |
Randy Dunlap | 9064caa | 2009-04-28 16:48:25 -0700 | [diff] [blame] | 1531 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_notsupp, |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 1532 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
Randy Dunlap | 9064caa | 2009-04-28 16:48:25 -0700 | [diff] [blame] | 1533 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
| 1534 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, |
| 1535 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 1536 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, |
Randy Dunlap | 9064caa | 2009-04-28 16:48:25 -0700 | [diff] [blame] | 1537 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1538 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1539 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1540 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1541 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1542 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, |
J. Bruce Fields | 04f4ad1 | 2010-12-16 09:51:13 -0500 | [diff] [blame] | 1543 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
Randy Dunlap | 9064caa | 2009-04-28 16:48:25 -0700 | [diff] [blame] | 1544 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
| 1545 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 1546 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, |
Randy Dunlap | 9064caa | 2009-04-28 16:48:25 -0700 | [diff] [blame] | 1547 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
Mi Jinlong | 345c284 | 2011-10-20 17:51:39 +0800 | [diff] [blame] | 1548 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 1549 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1550 | }; |
| 1551 | |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1552 | struct nfsd4_minorversion_ops { |
| 1553 | nfsd4_dec *decoders; |
| 1554 | int nops; |
| 1555 | }; |
| 1556 | |
| 1557 | static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 1558 | [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1559 | [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1560 | }; |
| 1561 | |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1562 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
| 1564 | { |
| 1565 | DECODE_HEAD; |
| 1566 | struct nfsd4_op *op; |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1567 | struct nfsd4_minorversion_ops *ops; |
J. Bruce Fields | 1091006 | 2011-01-24 12:11:02 -0500 | [diff] [blame] | 1568 | bool cachethis = false; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1569 | int i; |
| 1570 | |
| 1571 | /* |
| 1572 | * XXX: According to spec, we should check the tag |
| 1573 | * for UTF-8 compliance. I'm postponing this for |
| 1574 | * now because it seems that some clients do use |
| 1575 | * binary tags. |
| 1576 | */ |
| 1577 | READ_BUF(4); |
| 1578 | READ32(argp->taglen); |
| 1579 | READ_BUF(argp->taglen + 8); |
| 1580 | SAVEMEM(argp->tag, argp->taglen); |
| 1581 | READ32(argp->minorversion); |
| 1582 | READ32(argp->opcnt); |
| 1583 | |
| 1584 | if (argp->taglen > NFSD4_MAX_TAGLEN) |
| 1585 | goto xdr_error; |
| 1586 | if (argp->opcnt > 100) |
| 1587 | goto xdr_error; |
| 1588 | |
Tobias Klauser | e8c96f8 | 2006-03-24 03:15:34 -0800 | [diff] [blame] | 1589 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1590 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
| 1591 | if (!argp->ops) { |
| 1592 | argp->ops = argp->iops; |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 1593 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1594 | goto xdr_error; |
| 1595 | } |
| 1596 | } |
| 1597 | |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1598 | if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) |
Benny Halevy | 30cff1f | 2008-07-02 11:13:18 +0300 | [diff] [blame] | 1599 | argp->opcnt = 0; |
| 1600 | |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1601 | ops = &nfsd4_minorversion[argp->minorversion]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | for (i = 0; i < argp->opcnt; i++) { |
| 1603 | op = &argp->ops[i]; |
| 1604 | op->replay = NULL; |
| 1605 | |
| 1606 | /* |
| 1607 | * We can't use READ_BUF() here because we need to handle |
| 1608 | * a missing opcode as an OP_WRITE + 1. So we need to check |
| 1609 | * to see if we're truly at the end of our buffer or if there |
| 1610 | * is another page we need to flip to. |
| 1611 | */ |
| 1612 | |
| 1613 | if (argp->p == argp->end) { |
| 1614 | if (argp->pagelen < 4) { |
| 1615 | /* There isn't an opcode still on the wire */ |
| 1616 | op->opnum = OP_WRITE + 1; |
| 1617 | op->status = nfserr_bad_xdr; |
| 1618 | argp->opcnt = i+1; |
| 1619 | break; |
| 1620 | } |
| 1621 | |
| 1622 | /* |
| 1623 | * False alarm. We just hit a page boundary, but there |
| 1624 | * is still data available. Move pointer across page |
| 1625 | * boundary. *snip from READ_BUF* |
| 1626 | */ |
| 1627 | argp->p = page_address(argp->pagelist[0]); |
| 1628 | argp->pagelist++; |
| 1629 | if (argp->pagelen < PAGE_SIZE) { |
Neil Brown | 2bc3c11 | 2010-04-20 12:16:52 +1000 | [diff] [blame] | 1630 | argp->end = argp->p + (argp->pagelen>>2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | argp->pagelen = 0; |
| 1632 | } else { |
Neil Brown | 2bc3c11 | 2010-04-20 12:16:52 +1000 | [diff] [blame] | 1633 | argp->end = argp->p + (PAGE_SIZE>>2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1634 | argp->pagelen -= PAGE_SIZE; |
| 1635 | } |
| 1636 | } |
| 1637 | op->opnum = ntohl(*argp->p++); |
| 1638 | |
Ricardo Labiaga | de3cab7 | 2009-12-11 20:03:27 -0800 | [diff] [blame] | 1639 | if (op->opnum >= FIRST_NFS4_OP && op->opnum <= LAST_NFS4_OP) |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1640 | op->status = ops->decoders[op->opnum](argp, &op->u); |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1641 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | op->opnum = OP_ILLEGAL; |
| 1643 | op->status = nfserr_op_illegal; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1644 | } |
| 1645 | |
| 1646 | if (op->status) { |
| 1647 | argp->opcnt = i+1; |
| 1648 | break; |
| 1649 | } |
J. Bruce Fields | 1091006 | 2011-01-24 12:11:02 -0500 | [diff] [blame] | 1650 | /* |
| 1651 | * We'll try to cache the result in the DRC if any one |
| 1652 | * op in the compound wants to be cached: |
| 1653 | */ |
| 1654 | cachethis |= nfsd4_cache_this_op(op); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1655 | } |
J. Bruce Fields | 1091006 | 2011-01-24 12:11:02 -0500 | [diff] [blame] | 1656 | /* Sessions make the DRC unnecessary: */ |
| 1657 | if (argp->minorversion) |
| 1658 | cachethis = false; |
| 1659 | argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1660 | |
| 1661 | DECODE_TAIL; |
| 1662 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1664 | #define WRITE32(n) *p++ = htonl(n) |
| 1665 | #define WRITE64(n) do { \ |
| 1666 | *p++ = htonl((u32)((n) >> 32)); \ |
| 1667 | *p++ = htonl((u32)(n)); \ |
| 1668 | } while (0) |
Harvey Harrison | 5108b27 | 2008-07-17 21:33:04 -0700 | [diff] [blame] | 1669 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1670 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
| 1671 | memcpy(p, ptr, nbytes); \ |
| 1672 | p += XDR_QUADLEN(nbytes); \ |
Harvey Harrison | 5108b27 | 2008-07-17 21:33:04 -0700 | [diff] [blame] | 1673 | }} while (0) |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 1674 | |
| 1675 | static void write32(__be32 **p, u32 n) |
| 1676 | { |
| 1677 | *(*p)++ = n; |
| 1678 | } |
| 1679 | |
| 1680 | static void write64(__be32 **p, u64 n) |
| 1681 | { |
| 1682 | write32(p, (u32)(n >> 32)); |
| 1683 | write32(p, (u32)n); |
| 1684 | } |
| 1685 | |
| 1686 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) |
| 1687 | { |
| 1688 | if (IS_I_VERSION(inode)) { |
| 1689 | write64(p, inode->i_version); |
| 1690 | } else { |
| 1691 | write32(p, stat->ctime.tv_sec); |
| 1692 | write32(p, stat->ctime.tv_nsec); |
| 1693 | } |
| 1694 | } |
| 1695 | |
| 1696 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) |
| 1697 | { |
| 1698 | write32(p, c->atomic); |
| 1699 | if (c->change_supported) { |
| 1700 | write64(p, c->before_change); |
| 1701 | write64(p, c->after_change); |
| 1702 | } else { |
| 1703 | write32(p, c->before_ctime_sec); |
| 1704 | write32(p, c->before_ctime_nsec); |
| 1705 | write32(p, c->after_ctime_sec); |
| 1706 | write32(p, c->after_ctime_nsec); |
| 1707 | } |
| 1708 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | |
| 1710 | #define RESERVE_SPACE(nbytes) do { \ |
| 1711 | p = resp->p; \ |
| 1712 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ |
| 1713 | } while (0) |
| 1714 | #define ADJUST_ARGS() resp->p = p |
| 1715 | |
| 1716 | /* |
| 1717 | * Header routine to setup seqid operation replay cache |
| 1718 | */ |
| 1719 | #define ENCODE_SEQID_OP_HEAD \ |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1720 | __be32 *save; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | \ |
| 1722 | save = resp->p; |
| 1723 | |
| 1724 | /* |
NeilBrown | 7fb64ce | 2005-07-07 17:59:20 -0700 | [diff] [blame] | 1725 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
| 1726 | * is where sequence id's are incremented, and the replay cache is filled. |
| 1727 | * Note that we increment sequence id's here, at the last moment, so we're sure |
| 1728 | * we know whether the error to be returned is a sequence id mutating error. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1729 | */ |
| 1730 | |
J. Bruce Fields | f3e4223 | 2011-08-24 12:27:31 -0400 | [diff] [blame] | 1731 | static void encode_seqid_op_tail(struct nfsd4_compoundres *resp, __be32 *save, __be32 nfserr) |
| 1732 | { |
| 1733 | struct nfs4_stateowner *stateowner = resp->cstate.replay_owner; |
| 1734 | |
| 1735 | if (seqid_mutating_err(ntohl(nfserr)) && stateowner) { |
| 1736 | stateowner->so_seqid++; |
| 1737 | stateowner->so_replay.rp_status = nfserr; |
| 1738 | stateowner->so_replay.rp_buflen = |
| 1739 | (char *)resp->p - (char *)save; |
| 1740 | memcpy(stateowner->so_replay.rp_buf, save, |
| 1741 | stateowner->so_replay.rp_buflen); |
J. Bruce Fields | 38c387b | 2011-09-16 17:42:48 -0400 | [diff] [blame] | 1742 | nfsd4_purge_closed_stateid(stateowner); |
J. Bruce Fields | f3e4223 | 2011-08-24 12:27:31 -0400 | [diff] [blame] | 1743 | } |
| 1744 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1746 | /* Encode as an array of strings the string given with components |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 1747 | * separated @sep. |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1748 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1749 | static __be32 nfsd4_encode_components(char sep, char *components, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1750 | __be32 **pp, int *buflen) |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1751 | { |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1752 | __be32 *p = *pp; |
| 1753 | __be32 *countp = p; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1754 | int strlen, count=0; |
| 1755 | char *str, *end; |
| 1756 | |
| 1757 | dprintk("nfsd4_encode_components(%s)\n", components); |
| 1758 | if ((*buflen -= 4) < 0) |
| 1759 | return nfserr_resource; |
| 1760 | WRITE32(0); /* We will fill this in with @count later */ |
| 1761 | end = str = components; |
| 1762 | while (*end) { |
| 1763 | for (; *end && (*end != sep); end++) |
| 1764 | ; /* Point to end of component */ |
| 1765 | strlen = end - str; |
| 1766 | if (strlen) { |
| 1767 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) |
| 1768 | return nfserr_resource; |
| 1769 | WRITE32(strlen); |
| 1770 | WRITEMEM(str, strlen); |
| 1771 | count++; |
| 1772 | } |
| 1773 | else |
| 1774 | end++; |
| 1775 | str = end; |
| 1776 | } |
| 1777 | *pp = p; |
| 1778 | p = countp; |
| 1779 | WRITE32(count); |
| 1780 | return 0; |
| 1781 | } |
| 1782 | |
| 1783 | /* |
| 1784 | * encode a location element of a fs_locations structure |
| 1785 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1786 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1787 | __be32 **pp, int *buflen) |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1788 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1789 | __be32 status; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1790 | __be32 *p = *pp; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1791 | |
| 1792 | status = nfsd4_encode_components(':', location->hosts, &p, buflen); |
| 1793 | if (status) |
| 1794 | return status; |
| 1795 | status = nfsd4_encode_components('/', location->path, &p, buflen); |
| 1796 | if (status) |
| 1797 | return status; |
| 1798 | *pp = p; |
| 1799 | return 0; |
| 1800 | } |
| 1801 | |
| 1802 | /* |
Trond Myklebust | ed748aa | 2011-09-12 19:37:06 -0400 | [diff] [blame] | 1803 | * Encode a path in RFC3530 'pathname4' format |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1804 | */ |
Trond Myklebust | ed748aa | 2011-09-12 19:37:06 -0400 | [diff] [blame] | 1805 | static __be32 nfsd4_encode_path(const struct path *root, |
| 1806 | const struct path *path, __be32 **pp, int *buflen) |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1807 | { |
Trond Myklebust | ed748aa | 2011-09-12 19:37:06 -0400 | [diff] [blame] | 1808 | struct path cur = { |
| 1809 | .mnt = path->mnt, |
| 1810 | .dentry = path->dentry, |
| 1811 | }; |
| 1812 | __be32 *p = *pp; |
| 1813 | struct dentry **components = NULL; |
| 1814 | unsigned int ncomponents = 0; |
| 1815 | __be32 err = nfserr_jukebox; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1816 | |
Trond Myklebust | ed748aa | 2011-09-12 19:37:06 -0400 | [diff] [blame] | 1817 | dprintk("nfsd4_encode_components("); |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1818 | |
Trond Myklebust | ed748aa | 2011-09-12 19:37:06 -0400 | [diff] [blame] | 1819 | path_get(&cur); |
| 1820 | /* First walk the path up to the nfsd root, and store the |
| 1821 | * dentries/path components in an array. |
| 1822 | */ |
| 1823 | for (;;) { |
| 1824 | if (cur.dentry == root->dentry && cur.mnt == root->mnt) |
| 1825 | break; |
| 1826 | if (cur.dentry == cur.mnt->mnt_root) { |
| 1827 | if (follow_up(&cur)) |
| 1828 | continue; |
| 1829 | goto out_free; |
| 1830 | } |
| 1831 | if ((ncomponents & 15) == 0) { |
| 1832 | struct dentry **new; |
| 1833 | new = krealloc(components, |
| 1834 | sizeof(*new) * (ncomponents + 16), |
| 1835 | GFP_KERNEL); |
| 1836 | if (!new) |
| 1837 | goto out_free; |
| 1838 | components = new; |
| 1839 | } |
| 1840 | components[ncomponents++] = cur.dentry; |
| 1841 | cur.dentry = dget_parent(cur.dentry); |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1842 | } |
Trond Myklebust | ed748aa | 2011-09-12 19:37:06 -0400 | [diff] [blame] | 1843 | |
| 1844 | *buflen -= 4; |
| 1845 | if (*buflen < 0) |
| 1846 | goto out_free; |
| 1847 | WRITE32(ncomponents); |
| 1848 | |
| 1849 | while (ncomponents) { |
| 1850 | struct dentry *dentry = components[ncomponents - 1]; |
| 1851 | unsigned int len = dentry->d_name.len; |
| 1852 | |
| 1853 | *buflen -= 4 + (XDR_QUADLEN(len) << 2); |
| 1854 | if (*buflen < 0) |
| 1855 | goto out_free; |
| 1856 | WRITE32(len); |
| 1857 | WRITEMEM(dentry->d_name.name, len); |
| 1858 | dprintk("/%s", dentry->d_name.name); |
| 1859 | dput(dentry); |
| 1860 | ncomponents--; |
| 1861 | } |
| 1862 | |
| 1863 | *pp = p; |
| 1864 | err = 0; |
| 1865 | out_free: |
| 1866 | dprintk(")\n"); |
| 1867 | while (ncomponents) |
| 1868 | dput(components[--ncomponents]); |
| 1869 | kfree(components); |
| 1870 | path_put(&cur); |
| 1871 | return err; |
| 1872 | } |
| 1873 | |
| 1874 | static __be32 nfsd4_encode_fsloc_fsroot(struct svc_rqst *rqstp, |
| 1875 | const struct path *path, __be32 **pp, int *buflen) |
| 1876 | { |
| 1877 | struct svc_export *exp_ps; |
| 1878 | __be32 res; |
| 1879 | |
| 1880 | exp_ps = rqst_find_fsidzero_export(rqstp); |
| 1881 | if (IS_ERR(exp_ps)) |
| 1882 | return nfserrno(PTR_ERR(exp_ps)); |
| 1883 | res = nfsd4_encode_path(&exp_ps->ex_path, path, pp, buflen); |
| 1884 | exp_put(exp_ps); |
| 1885 | return res; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1886 | } |
| 1887 | |
| 1888 | /* |
| 1889 | * encode a fs_locations structure |
| 1890 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1891 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1892 | struct svc_export *exp, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1893 | __be32 **pp, int *buflen) |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1894 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1895 | __be32 status; |
Al Viro | cc45f01 | 2006-10-19 23:28:44 -0700 | [diff] [blame] | 1896 | int i; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1897 | __be32 *p = *pp; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1898 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1899 | |
Trond Myklebust | ed748aa | 2011-09-12 19:37:06 -0400 | [diff] [blame] | 1900 | status = nfsd4_encode_fsloc_fsroot(rqstp, &exp->ex_path, &p, buflen); |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1901 | if (status) |
| 1902 | return status; |
| 1903 | if ((*buflen -= 4) < 0) |
| 1904 | return nfserr_resource; |
| 1905 | WRITE32(fslocs->locations_count); |
| 1906 | for (i=0; i<fslocs->locations_count; i++) { |
| 1907 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], |
| 1908 | &p, buflen); |
| 1909 | if (status) |
| 1910 | return status; |
| 1911 | } |
| 1912 | *pp = p; |
| 1913 | return 0; |
| 1914 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | |
J. Bruce Fields | 3d2544b | 2011-08-15 11:49:30 -0400 | [diff] [blame] | 1916 | static u32 nfs4_file_type(umode_t mode) |
| 1917 | { |
| 1918 | switch (mode & S_IFMT) { |
| 1919 | case S_IFIFO: return NF4FIFO; |
| 1920 | case S_IFCHR: return NF4CHR; |
| 1921 | case S_IFDIR: return NF4DIR; |
| 1922 | case S_IFBLK: return NF4BLK; |
| 1923 | case S_IFLNK: return NF4LNK; |
| 1924 | case S_IFREG: return NF4REG; |
| 1925 | case S_IFSOCK: return NF4SOCK; |
| 1926 | default: return NF4BAD; |
| 1927 | }; |
| 1928 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1929 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1930 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1931 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1932 | __be32 **p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | { |
| 1934 | int status; |
| 1935 | |
| 1936 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) |
| 1937 | return nfserr_resource; |
| 1938 | if (whotype != NFS4_ACL_WHO_NAMED) |
| 1939 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); |
| 1940 | else if (group) |
| 1941 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); |
| 1942 | else |
| 1943 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); |
| 1944 | if (status < 0) |
| 1945 | return nfserrno(status); |
| 1946 | *p = xdr_encode_opaque(*p, NULL, status); |
| 1947 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; |
| 1948 | BUG_ON(*buflen < 0); |
| 1949 | return 0; |
| 1950 | } |
| 1951 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1952 | static inline __be32 |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1953 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | { |
| 1955 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); |
| 1956 | } |
| 1957 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1958 | static inline __be32 |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1959 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1960 | { |
| 1961 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); |
| 1962 | } |
| 1963 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1964 | static inline __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1965 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1966 | __be32 **p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | { |
| 1968 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); |
| 1969 | } |
| 1970 | |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1971 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
| 1972 | FATTR4_WORD0_RDATTR_ERROR) |
| 1973 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID |
| 1974 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1975 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1976 | { |
| 1977 | /* As per referral draft: */ |
| 1978 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || |
| 1979 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { |
| 1980 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || |
| 1981 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) |
| 1982 | *rdattr_err = NFSERR_MOVED; |
| 1983 | else |
| 1984 | return nfserr_moved; |
| 1985 | } |
| 1986 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; |
| 1987 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; |
| 1988 | return 0; |
| 1989 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | |
| 1991 | /* |
| 1992 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle |
| 1993 | * ourselves. |
| 1994 | * |
| 1995 | * @countp is the buffer size in _words_; upon successful return this becomes |
| 1996 | * replaced with the number of words written. |
| 1997 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1998 | __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1999 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2000 | struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval, |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2001 | struct svc_rqst *rqstp, int ignore_crossmnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2002 | { |
| 2003 | u32 bmval0 = bmval[0]; |
| 2004 | u32 bmval1 = bmval[1]; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2005 | u32 bmval2 = bmval[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2006 | struct kstat stat; |
| 2007 | struct svc_fh tempfh; |
| 2008 | struct kstatfs statfs; |
| 2009 | int buflen = *countp << 2; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2010 | __be32 *attrlenp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2011 | u32 dummy; |
| 2012 | u64 dummy64; |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 2013 | u32 rdattr_err = 0; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2014 | __be32 *p = buffer; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2015 | __be32 status; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 2016 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | int aclsupport = 0; |
| 2018 | struct nfs4_acl *acl = NULL; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2019 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
| 2020 | u32 minorversion = resp->cstate.minorversion; |
Christoph Hellwig | ebabe9a | 2010-07-07 18:53:11 +0200 | [diff] [blame] | 2021 | struct path path = { |
| 2022 | .mnt = exp->ex_path.mnt, |
| 2023 | .dentry = dentry, |
| 2024 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2025 | |
| 2026 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2027 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
| 2028 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); |
| 2029 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 2031 | if (exp->ex_fslocs.migrated) { |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2032 | BUG_ON(bmval[2]); |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 2033 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
| 2034 | if (status) |
| 2035 | goto out; |
| 2036 | } |
| 2037 | |
Jan Blunck | 5477549 | 2008-02-14 19:38:39 -0800 | [diff] [blame] | 2038 | err = vfs_getattr(exp->ex_path.mnt, dentry, &stat); |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 2039 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | goto out_nfserr; |
J. Bruce Fields | a16e92e | 2007-09-28 16:45:51 -0400 | [diff] [blame] | 2041 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
| 2042 | FATTR4_WORD0_MAXNAME)) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2043 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
| 2044 | FATTR4_WORD1_SPACE_TOTAL))) { |
Christoph Hellwig | ebabe9a | 2010-07-07 18:53:11 +0200 | [diff] [blame] | 2045 | err = vfs_statfs(&path, &statfs); |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 2046 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2047 | goto out_nfserr; |
| 2048 | } |
| 2049 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { |
| 2050 | fh_init(&tempfh, NFS4_FHSIZE); |
| 2051 | status = fh_compose(&tempfh, exp, dentry, NULL); |
| 2052 | if (status) |
| 2053 | goto out; |
| 2054 | fhp = &tempfh; |
| 2055 | } |
| 2056 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT |
| 2057 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 2058 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
| 2059 | aclsupport = (err == 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | if (bmval0 & FATTR4_WORD0_ACL) { |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 2061 | if (err == -EOPNOTSUPP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2062 | bmval0 &= ~FATTR4_WORD0_ACL; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 2063 | else if (err == -EINVAL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2064 | status = nfserr_attrnotsupp; |
| 2065 | goto out; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 2066 | } else if (err != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | goto out_nfserr; |
| 2068 | } |
| 2069 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2070 | |
Benny Halevy | 2b44f1b | 2010-09-30 20:47:46 +0200 | [diff] [blame] | 2071 | if (bmval2) { |
| 2072 | if ((buflen -= 16) < 0) |
| 2073 | goto out_resource; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2074 | WRITE32(3); |
| 2075 | WRITE32(bmval0); |
| 2076 | WRITE32(bmval1); |
| 2077 | WRITE32(bmval2); |
Benny Halevy | 2b44f1b | 2010-09-30 20:47:46 +0200 | [diff] [blame] | 2078 | } else if (bmval1) { |
| 2079 | if ((buflen -= 12) < 0) |
| 2080 | goto out_resource; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2081 | WRITE32(2); |
| 2082 | WRITE32(bmval0); |
| 2083 | WRITE32(bmval1); |
| 2084 | } else { |
Benny Halevy | 2b44f1b | 2010-09-30 20:47:46 +0200 | [diff] [blame] | 2085 | if ((buflen -= 8) < 0) |
| 2086 | goto out_resource; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2087 | WRITE32(1); |
| 2088 | WRITE32(bmval0); |
| 2089 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2090 | attrlenp = p++; /* to be backfilled later */ |
| 2091 | |
| 2092 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2093 | u32 word0 = nfsd_suppattrs0(minorversion); |
| 2094 | u32 word1 = nfsd_suppattrs1(minorversion); |
| 2095 | u32 word2 = nfsd_suppattrs2(minorversion); |
| 2096 | |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 2097 | if (!aclsupport) |
| 2098 | word0 &= ~FATTR4_WORD0_ACL; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2099 | if (!word2) { |
Benny Halevy | 2b44f1b | 2010-09-30 20:47:46 +0200 | [diff] [blame] | 2100 | if ((buflen -= 12) < 0) |
| 2101 | goto out_resource; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2102 | WRITE32(2); |
| 2103 | WRITE32(word0); |
| 2104 | WRITE32(word1); |
| 2105 | } else { |
Benny Halevy | 2b44f1b | 2010-09-30 20:47:46 +0200 | [diff] [blame] | 2106 | if ((buflen -= 16) < 0) |
| 2107 | goto out_resource; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2108 | WRITE32(3); |
| 2109 | WRITE32(word0); |
| 2110 | WRITE32(word1); |
| 2111 | WRITE32(word2); |
| 2112 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2113 | } |
| 2114 | if (bmval0 & FATTR4_WORD0_TYPE) { |
| 2115 | if ((buflen -= 4) < 0) |
| 2116 | goto out_resource; |
J. Bruce Fields | 3d2544b | 2011-08-15 11:49:30 -0400 | [diff] [blame] | 2117 | dummy = nfs4_file_type(stat.mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | if (dummy == NF4BAD) |
| 2119 | goto out_serverfault; |
| 2120 | WRITE32(dummy); |
| 2121 | } |
| 2122 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { |
| 2123 | if ((buflen -= 4) < 0) |
| 2124 | goto out_resource; |
NeilBrown | 4964000 | 2005-06-23 22:02:58 -0700 | [diff] [blame] | 2125 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
NeilBrown | e34ac86 | 2005-07-07 17:59:30 -0700 | [diff] [blame] | 2126 | WRITE32(NFS4_FH_PERSISTENT); |
NeilBrown | 4964000 | 2005-06-23 22:02:58 -0700 | [diff] [blame] | 2127 | else |
NeilBrown | e34ac86 | 2005-07-07 17:59:30 -0700 | [diff] [blame] | 2128 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2129 | } |
| 2130 | if (bmval0 & FATTR4_WORD0_CHANGE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | if ((buflen -= 8) < 0) |
| 2132 | goto out_resource; |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2133 | write_change(&p, &stat, dentry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2134 | } |
| 2135 | if (bmval0 & FATTR4_WORD0_SIZE) { |
| 2136 | if ((buflen -= 8) < 0) |
| 2137 | goto out_resource; |
| 2138 | WRITE64(stat.size); |
| 2139 | } |
| 2140 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { |
| 2141 | if ((buflen -= 4) < 0) |
| 2142 | goto out_resource; |
| 2143 | WRITE32(1); |
| 2144 | } |
| 2145 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { |
| 2146 | if ((buflen -= 4) < 0) |
| 2147 | goto out_resource; |
| 2148 | WRITE32(1); |
| 2149 | } |
| 2150 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { |
| 2151 | if ((buflen -= 4) < 0) |
| 2152 | goto out_resource; |
| 2153 | WRITE32(0); |
| 2154 | } |
| 2155 | if (bmval0 & FATTR4_WORD0_FSID) { |
| 2156 | if ((buflen -= 16) < 0) |
| 2157 | goto out_resource; |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 2158 | if (exp->ex_fslocs.migrated) { |
| 2159 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); |
| 2160 | WRITE64(NFS4_REFERRAL_FSID_MINOR); |
NeilBrown | af6a4e2 | 2007-02-14 00:33:12 -0800 | [diff] [blame] | 2161 | } else switch(fsid_source(fhp)) { |
| 2162 | case FSIDSOURCE_FSID: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | WRITE64((u64)exp->ex_fsid); |
| 2164 | WRITE64((u64)0); |
NeilBrown | af6a4e2 | 2007-02-14 00:33:12 -0800 | [diff] [blame] | 2165 | break; |
| 2166 | case FSIDSOURCE_DEV: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2167 | WRITE32(0); |
| 2168 | WRITE32(MAJOR(stat.dev)); |
| 2169 | WRITE32(0); |
| 2170 | WRITE32(MINOR(stat.dev)); |
NeilBrown | af6a4e2 | 2007-02-14 00:33:12 -0800 | [diff] [blame] | 2171 | break; |
| 2172 | case FSIDSOURCE_UUID: |
| 2173 | WRITEMEM(exp->ex_uuid, 16); |
| 2174 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2175 | } |
| 2176 | } |
| 2177 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { |
| 2178 | if ((buflen -= 4) < 0) |
| 2179 | goto out_resource; |
| 2180 | WRITE32(0); |
| 2181 | } |
| 2182 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { |
| 2183 | if ((buflen -= 4) < 0) |
| 2184 | goto out_resource; |
J. Bruce Fields | cf07d2e | 2010-02-28 23:20:19 -0500 | [diff] [blame] | 2185 | WRITE32(nfsd4_lease); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2186 | } |
| 2187 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { |
| 2188 | if ((buflen -= 4) < 0) |
| 2189 | goto out_resource; |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 2190 | WRITE32(rdattr_err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2191 | } |
| 2192 | if (bmval0 & FATTR4_WORD0_ACL) { |
| 2193 | struct nfs4_ace *ace; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2194 | |
| 2195 | if (acl == NULL) { |
| 2196 | if ((buflen -= 4) < 0) |
| 2197 | goto out_resource; |
| 2198 | |
| 2199 | WRITE32(0); |
| 2200 | goto out_acl; |
| 2201 | } |
| 2202 | if ((buflen -= 4) < 0) |
| 2203 | goto out_resource; |
| 2204 | WRITE32(acl->naces); |
| 2205 | |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 2206 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | if ((buflen -= 4*3) < 0) |
| 2208 | goto out_resource; |
| 2209 | WRITE32(ace->type); |
| 2210 | WRITE32(ace->flag); |
| 2211 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); |
| 2212 | status = nfsd4_encode_aclname(rqstp, ace->whotype, |
| 2213 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, |
| 2214 | &p, &buflen); |
| 2215 | if (status == nfserr_resource) |
| 2216 | goto out_resource; |
| 2217 | if (status) |
| 2218 | goto out; |
| 2219 | } |
| 2220 | } |
| 2221 | out_acl: |
| 2222 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { |
| 2223 | if ((buflen -= 4) < 0) |
| 2224 | goto out_resource; |
| 2225 | WRITE32(aclsupport ? |
| 2226 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
| 2227 | } |
| 2228 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { |
| 2229 | if ((buflen -= 4) < 0) |
| 2230 | goto out_resource; |
| 2231 | WRITE32(1); |
| 2232 | } |
| 2233 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { |
| 2234 | if ((buflen -= 4) < 0) |
| 2235 | goto out_resource; |
| 2236 | WRITE32(1); |
| 2237 | } |
| 2238 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { |
| 2239 | if ((buflen -= 4) < 0) |
| 2240 | goto out_resource; |
| 2241 | WRITE32(1); |
| 2242 | } |
| 2243 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { |
| 2244 | if ((buflen -= 4) < 0) |
| 2245 | goto out_resource; |
| 2246 | WRITE32(1); |
| 2247 | } |
| 2248 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { |
| 2249 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; |
| 2250 | if (buflen < 0) |
| 2251 | goto out_resource; |
| 2252 | WRITE32(fhp->fh_handle.fh_size); |
| 2253 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); |
| 2254 | } |
| 2255 | if (bmval0 & FATTR4_WORD0_FILEID) { |
| 2256 | if ((buflen -= 8) < 0) |
| 2257 | goto out_resource; |
Peter Staubach | 40ee5dc | 2007-08-16 12:10:07 -0400 | [diff] [blame] | 2258 | WRITE64(stat.ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2259 | } |
| 2260 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { |
| 2261 | if ((buflen -= 8) < 0) |
| 2262 | goto out_resource; |
| 2263 | WRITE64((u64) statfs.f_ffree); |
| 2264 | } |
| 2265 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { |
| 2266 | if ((buflen -= 8) < 0) |
| 2267 | goto out_resource; |
| 2268 | WRITE64((u64) statfs.f_ffree); |
| 2269 | } |
| 2270 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { |
| 2271 | if ((buflen -= 8) < 0) |
| 2272 | goto out_resource; |
| 2273 | WRITE64((u64) statfs.f_files); |
| 2274 | } |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 2275 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
| 2276 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); |
| 2277 | if (status == nfserr_resource) |
| 2278 | goto out_resource; |
| 2279 | if (status) |
| 2280 | goto out; |
| 2281 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
| 2283 | if ((buflen -= 4) < 0) |
| 2284 | goto out_resource; |
| 2285 | WRITE32(1); |
| 2286 | } |
| 2287 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { |
| 2288 | if ((buflen -= 8) < 0) |
| 2289 | goto out_resource; |
| 2290 | WRITE64(~(u64)0); |
| 2291 | } |
| 2292 | if (bmval0 & FATTR4_WORD0_MAXLINK) { |
| 2293 | if ((buflen -= 4) < 0) |
| 2294 | goto out_resource; |
| 2295 | WRITE32(255); |
| 2296 | } |
| 2297 | if (bmval0 & FATTR4_WORD0_MAXNAME) { |
| 2298 | if ((buflen -= 4) < 0) |
| 2299 | goto out_resource; |
J. Bruce Fields | a16e92e | 2007-09-28 16:45:51 -0400 | [diff] [blame] | 2300 | WRITE32(statfs.f_namelen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2301 | } |
| 2302 | if (bmval0 & FATTR4_WORD0_MAXREAD) { |
| 2303 | if ((buflen -= 8) < 0) |
| 2304 | goto out_resource; |
Greg Banks | 7adae48 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2305 | WRITE64((u64) svc_max_payload(rqstp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2306 | } |
| 2307 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { |
| 2308 | if ((buflen -= 8) < 0) |
| 2309 | goto out_resource; |
Greg Banks | 7adae48 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2310 | WRITE64((u64) svc_max_payload(rqstp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2311 | } |
| 2312 | if (bmval1 & FATTR4_WORD1_MODE) { |
| 2313 | if ((buflen -= 4) < 0) |
| 2314 | goto out_resource; |
| 2315 | WRITE32(stat.mode & S_IALLUGO); |
| 2316 | } |
| 2317 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { |
| 2318 | if ((buflen -= 4) < 0) |
| 2319 | goto out_resource; |
| 2320 | WRITE32(1); |
| 2321 | } |
| 2322 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { |
| 2323 | if ((buflen -= 4) < 0) |
| 2324 | goto out_resource; |
| 2325 | WRITE32(stat.nlink); |
| 2326 | } |
| 2327 | if (bmval1 & FATTR4_WORD1_OWNER) { |
| 2328 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); |
| 2329 | if (status == nfserr_resource) |
| 2330 | goto out_resource; |
| 2331 | if (status) |
| 2332 | goto out; |
| 2333 | } |
| 2334 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { |
| 2335 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); |
| 2336 | if (status == nfserr_resource) |
| 2337 | goto out_resource; |
| 2338 | if (status) |
| 2339 | goto out; |
| 2340 | } |
| 2341 | if (bmval1 & FATTR4_WORD1_RAWDEV) { |
| 2342 | if ((buflen -= 8) < 0) |
| 2343 | goto out_resource; |
| 2344 | WRITE32((u32) MAJOR(stat.rdev)); |
| 2345 | WRITE32((u32) MINOR(stat.rdev)); |
| 2346 | } |
| 2347 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { |
| 2348 | if ((buflen -= 8) < 0) |
| 2349 | goto out_resource; |
| 2350 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; |
| 2351 | WRITE64(dummy64); |
| 2352 | } |
| 2353 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { |
| 2354 | if ((buflen -= 8) < 0) |
| 2355 | goto out_resource; |
| 2356 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; |
| 2357 | WRITE64(dummy64); |
| 2358 | } |
| 2359 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { |
| 2360 | if ((buflen -= 8) < 0) |
| 2361 | goto out_resource; |
| 2362 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; |
| 2363 | WRITE64(dummy64); |
| 2364 | } |
| 2365 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { |
| 2366 | if ((buflen -= 8) < 0) |
| 2367 | goto out_resource; |
| 2368 | dummy64 = (u64)stat.blocks << 9; |
| 2369 | WRITE64(dummy64); |
| 2370 | } |
| 2371 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { |
| 2372 | if ((buflen -= 12) < 0) |
| 2373 | goto out_resource; |
| 2374 | WRITE32(0); |
| 2375 | WRITE32(stat.atime.tv_sec); |
| 2376 | WRITE32(stat.atime.tv_nsec); |
| 2377 | } |
| 2378 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { |
| 2379 | if ((buflen -= 12) < 0) |
| 2380 | goto out_resource; |
| 2381 | WRITE32(0); |
| 2382 | WRITE32(1); |
| 2383 | WRITE32(0); |
| 2384 | } |
| 2385 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { |
| 2386 | if ((buflen -= 12) < 0) |
| 2387 | goto out_resource; |
| 2388 | WRITE32(0); |
| 2389 | WRITE32(stat.ctime.tv_sec); |
| 2390 | WRITE32(stat.ctime.tv_nsec); |
| 2391 | } |
| 2392 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { |
| 2393 | if ((buflen -= 12) < 0) |
| 2394 | goto out_resource; |
| 2395 | WRITE32(0); |
| 2396 | WRITE32(stat.mtime.tv_sec); |
| 2397 | WRITE32(stat.mtime.tv_nsec); |
| 2398 | } |
| 2399 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2400 | if ((buflen -= 8) < 0) |
| 2401 | goto out_resource; |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2402 | /* |
| 2403 | * Get parent's attributes if not ignoring crossmount |
| 2404 | * and this is the root of a cross-mounted filesystem. |
| 2405 | */ |
| 2406 | if (ignore_crossmnt == 0 && |
Al Viro | 462d605 | 2010-01-30 16:11:21 -0500 | [diff] [blame] | 2407 | dentry == exp->ex_path.mnt->mnt_root) { |
| 2408 | struct path path = exp->ex_path; |
| 2409 | path_get(&path); |
| 2410 | while (follow_up(&path)) { |
| 2411 | if (path.dentry != path.mnt->mnt_root) |
| 2412 | break; |
| 2413 | } |
| 2414 | err = vfs_getattr(path.mnt, path.dentry, &stat); |
| 2415 | path_put(&path); |
Peter Staubach | 40ee5dc | 2007-08-16 12:10:07 -0400 | [diff] [blame] | 2416 | if (err) |
| 2417 | goto out_nfserr; |
| 2418 | } |
| 2419 | WRITE64(stat.ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2420 | } |
Benny Halevy | 8c18f20 | 2009-04-03 08:29:14 +0300 | [diff] [blame] | 2421 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
| 2422 | WRITE32(3); |
| 2423 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); |
| 2424 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); |
| 2425 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); |
| 2426 | } |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2428 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
| 2429 | *countp = p - buffer; |
| 2430 | status = nfs_ok; |
| 2431 | |
| 2432 | out: |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 2433 | kfree(acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2434 | if (fhp == &tempfh) |
| 2435 | fh_put(&tempfh); |
| 2436 | return status; |
| 2437 | out_nfserr: |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 2438 | status = nfserrno(err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2439 | goto out; |
| 2440 | out_resource: |
| 2441 | *countp = 0; |
| 2442 | status = nfserr_resource; |
| 2443 | goto out; |
| 2444 | out_serverfault: |
| 2445 | status = nfserr_serverfault; |
| 2446 | goto out; |
| 2447 | } |
| 2448 | |
J. Bruce Fields | c0ce6ec | 2008-02-11 15:48:47 -0500 | [diff] [blame] | 2449 | static inline int attributes_need_mount(u32 *bmval) |
| 2450 | { |
| 2451 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) |
| 2452 | return 1; |
| 2453 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) |
| 2454 | return 1; |
| 2455 | return 0; |
| 2456 | } |
| 2457 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2458 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2459 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2460 | const char *name, int namlen, __be32 *p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2461 | { |
| 2462 | struct svc_export *exp = cd->rd_fhp->fh_export; |
| 2463 | struct dentry *dentry; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2464 | __be32 nfserr; |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2465 | int ignore_crossmnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2466 | |
| 2467 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); |
| 2468 | if (IS_ERR(dentry)) |
| 2469 | return nfserrno(PTR_ERR(dentry)); |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2470 | if (!dentry->d_inode) { |
| 2471 | /* |
| 2472 | * nfsd_buffered_readdir drops the i_mutex between |
| 2473 | * readdir and calling this callback, leaving a window |
| 2474 | * where this directory entry could have gone away. |
| 2475 | */ |
| 2476 | dput(dentry); |
| 2477 | return nfserr_noent; |
| 2478 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2479 | |
| 2480 | exp_get(exp); |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2481 | /* |
| 2482 | * In the case of a mountpoint, the client may be asking for |
| 2483 | * attributes that are only properties of the underlying filesystem |
| 2484 | * as opposed to the cross-mounted file system. In such a case, |
| 2485 | * we will not follow the cross mount and will fill the attribtutes |
| 2486 | * directly from the mountpoint dentry. |
| 2487 | */ |
J. Bruce Fields | 3227fa4 | 2009-10-25 21:43:01 -0400 | [diff] [blame] | 2488 | if (nfsd_mountpoint(dentry, exp)) { |
J.Bruce Fields | 021d3a7 | 2006-12-13 00:35:24 -0800 | [diff] [blame] | 2489 | int err; |
| 2490 | |
J. Bruce Fields | 3227fa4 | 2009-10-25 21:43:01 -0400 | [diff] [blame] | 2491 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
| 2492 | && !attributes_need_mount(cd->rd_bmval)) { |
| 2493 | ignore_crossmnt = 1; |
| 2494 | goto out_encode; |
| 2495 | } |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2496 | /* |
| 2497 | * Why the heck aren't we just using nfsd_lookup?? |
| 2498 | * Different "."/".." handling? Something else? |
| 2499 | * At least, add a comment here to explain.... |
| 2500 | */ |
J.Bruce Fields | 021d3a7 | 2006-12-13 00:35:24 -0800 | [diff] [blame] | 2501 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
| 2502 | if (err) { |
| 2503 | nfserr = nfserrno(err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2504 | goto out_put; |
| 2505 | } |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2506 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
| 2507 | if (nfserr) |
| 2508 | goto out_put; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2509 | |
| 2510 | } |
J. Bruce Fields | 3227fa4 | 2009-10-25 21:43:01 -0400 | [diff] [blame] | 2511 | out_encode: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2512 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2513 | cd->rd_rqstp, ignore_crossmnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2514 | out_put: |
| 2515 | dput(dentry); |
| 2516 | exp_put(exp); |
| 2517 | return nfserr; |
| 2518 | } |
| 2519 | |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2520 | static __be32 * |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2521 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2522 | { |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2523 | __be32 *attrlenp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2524 | |
| 2525 | if (buflen < 6) |
| 2526 | return NULL; |
| 2527 | *p++ = htonl(2); |
| 2528 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ |
| 2529 | *p++ = htonl(0); /* bmval1 */ |
| 2530 | |
| 2531 | attrlenp = p++; |
| 2532 | *p++ = nfserr; /* no htonl */ |
| 2533 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
| 2534 | return p; |
| 2535 | } |
| 2536 | |
| 2537 | static int |
NeilBrown | a0ad13e | 2007-01-26 00:57:10 -0800 | [diff] [blame] | 2538 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
| 2539 | loff_t offset, u64 ino, unsigned int d_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2540 | { |
NeilBrown | a0ad13e | 2007-01-26 00:57:10 -0800 | [diff] [blame] | 2541 | struct readdir_cd *ccd = ccdv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2542 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
| 2543 | int buflen; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2544 | __be32 *p = cd->buffer; |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2545 | __be32 *cookiep; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2546 | __be32 nfserr = nfserr_toosmall; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2547 | |
| 2548 | /* In nfsv4, "." and ".." never make it onto the wire.. */ |
| 2549 | if (name && isdotent(name, namlen)) { |
| 2550 | cd->common.err = nfs_ok; |
| 2551 | return 0; |
| 2552 | } |
| 2553 | |
| 2554 | if (cd->offset) |
| 2555 | xdr_encode_hyper(cd->offset, (u64) offset); |
| 2556 | |
| 2557 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); |
| 2558 | if (buflen < 0) |
| 2559 | goto fail; |
| 2560 | |
| 2561 | *p++ = xdr_one; /* mark entry present */ |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2562 | cookiep = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2563 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
| 2564 | p = xdr_encode_array(p, name, namlen); /* name length & name */ |
| 2565 | |
| 2566 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); |
| 2567 | switch (nfserr) { |
| 2568 | case nfs_ok: |
| 2569 | p += buflen; |
| 2570 | break; |
| 2571 | case nfserr_resource: |
| 2572 | nfserr = nfserr_toosmall; |
| 2573 | goto fail; |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2574 | case nfserr_noent: |
| 2575 | goto skip_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2576 | default: |
| 2577 | /* |
| 2578 | * If the client requested the RDATTR_ERROR attribute, |
| 2579 | * we stuff the error code into this attribute |
| 2580 | * and continue. If this attribute was not requested, |
| 2581 | * then in accordance with the spec, we fail the |
| 2582 | * entire READDIR operation(!) |
| 2583 | */ |
| 2584 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) |
| 2585 | goto fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2586 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
Fred Isaman | 34081ef | 2006-01-18 17:43:40 -0800 | [diff] [blame] | 2587 | if (p == NULL) { |
| 2588 | nfserr = nfserr_toosmall; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2589 | goto fail; |
Fred Isaman | 34081ef | 2006-01-18 17:43:40 -0800 | [diff] [blame] | 2590 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2591 | } |
| 2592 | cd->buflen -= (p - cd->buffer); |
| 2593 | cd->buffer = p; |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2594 | cd->offset = cookiep; |
| 2595 | skip_entry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2596 | cd->common.err = nfs_ok; |
| 2597 | return 0; |
| 2598 | fail: |
| 2599 | cd->common.err = nfserr; |
| 2600 | return -EINVAL; |
| 2601 | } |
| 2602 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2603 | static void |
| 2604 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) |
| 2605 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2606 | __be32 *p; |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2607 | |
| 2608 | RESERVE_SPACE(sizeof(stateid_t)); |
| 2609 | WRITE32(sid->si_generation); |
| 2610 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
| 2611 | ADJUST_ARGS(); |
| 2612 | } |
| 2613 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2614 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2615 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2616 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2617 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2618 | |
| 2619 | if (!nfserr) { |
| 2620 | RESERVE_SPACE(8); |
| 2621 | WRITE32(access->ac_supported); |
| 2622 | WRITE32(access->ac_resp_access); |
| 2623 | ADJUST_ARGS(); |
| 2624 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2625 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2626 | } |
| 2627 | |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 2628 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
| 2629 | { |
| 2630 | __be32 *p; |
| 2631 | |
| 2632 | if (!nfserr) { |
| 2633 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8); |
| 2634 | WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 2635 | WRITE32(bcts->dir); |
| 2636 | /* XXX: ? */ |
| 2637 | WRITE32(0); |
| 2638 | ADJUST_ARGS(); |
| 2639 | } |
| 2640 | return nfserr; |
| 2641 | } |
| 2642 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2643 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2644 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2645 | { |
| 2646 | ENCODE_SEQID_OP_HEAD; |
| 2647 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2648 | if (!nfserr) |
| 2649 | nfsd4_encode_stateid(resp, &close->cl_stateid); |
| 2650 | |
J. Bruce Fields | f3e4223 | 2011-08-24 12:27:31 -0400 | [diff] [blame] | 2651 | encode_seqid_op_tail(resp, save, nfserr); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2652 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2653 | } |
| 2654 | |
| 2655 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2656 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2657 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2658 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2659 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2660 | |
| 2661 | if (!nfserr) { |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 2662 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
| 2663 | WRITEMEM(commit->co_verf.data, NFS4_VERIFIER_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2664 | ADJUST_ARGS(); |
| 2665 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2666 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2667 | } |
| 2668 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2669 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2670 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2671 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2672 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2673 | |
| 2674 | if (!nfserr) { |
| 2675 | RESERVE_SPACE(32); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2676 | write_cinfo(&p, &create->cr_cinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2677 | WRITE32(2); |
| 2678 | WRITE32(create->cr_bmval[0]); |
| 2679 | WRITE32(create->cr_bmval[1]); |
| 2680 | ADJUST_ARGS(); |
| 2681 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2682 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2683 | } |
| 2684 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2685 | static __be32 |
| 2686 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2687 | { |
| 2688 | struct svc_fh *fhp = getattr->ga_fhp; |
| 2689 | int buflen; |
| 2690 | |
| 2691 | if (nfserr) |
| 2692 | return nfserr; |
| 2693 | |
| 2694 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); |
| 2695 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, |
| 2696 | resp->p, &buflen, getattr->ga_bmval, |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2697 | resp->rqstp, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2698 | if (!nfserr) |
| 2699 | resp->p += buflen; |
| 2700 | return nfserr; |
| 2701 | } |
| 2702 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2703 | static __be32 |
| 2704 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2705 | { |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2706 | struct svc_fh *fhp = *fhpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2707 | unsigned int len; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2708 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2709 | |
| 2710 | if (!nfserr) { |
| 2711 | len = fhp->fh_handle.fh_size; |
| 2712 | RESERVE_SPACE(len + 4); |
| 2713 | WRITE32(len); |
| 2714 | WRITEMEM(&fhp->fh_handle.fh_base, len); |
| 2715 | ADJUST_ARGS(); |
| 2716 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2717 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2718 | } |
| 2719 | |
| 2720 | /* |
| 2721 | * Including all fields other than the name, a LOCK4denied structure requires |
| 2722 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. |
| 2723 | */ |
| 2724 | static void |
| 2725 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) |
| 2726 | { |
J. Bruce Fields | 7c13f34 | 2011-08-30 22:15:47 -0400 | [diff] [blame] | 2727 | struct xdr_netobj *conf = &ld->ld_owner; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2728 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2729 | |
J. Bruce Fields | 7c13f34 | 2011-08-30 22:15:47 -0400 | [diff] [blame] | 2730 | RESERVE_SPACE(32 + XDR_LEN(conf->len)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2731 | WRITE64(ld->ld_start); |
| 2732 | WRITE64(ld->ld_length); |
| 2733 | WRITE32(ld->ld_type); |
J. Bruce Fields | 7c13f34 | 2011-08-30 22:15:47 -0400 | [diff] [blame] | 2734 | if (conf->len) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2735 | WRITEMEM(&ld->ld_clientid, 8); |
J. Bruce Fields | 7c13f34 | 2011-08-30 22:15:47 -0400 | [diff] [blame] | 2736 | WRITE32(conf->len); |
| 2737 | WRITEMEM(conf->data, conf->len); |
| 2738 | kfree(conf->data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2739 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
| 2740 | WRITE64((u64)0); /* clientid */ |
| 2741 | WRITE32(0); /* length of owner name */ |
| 2742 | } |
| 2743 | ADJUST_ARGS(); |
| 2744 | } |
| 2745 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2746 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2747 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2748 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2749 | ENCODE_SEQID_OP_HEAD; |
| 2750 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2751 | if (!nfserr) |
| 2752 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); |
| 2753 | else if (nfserr == nfserr_denied) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2754 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
| 2755 | |
J. Bruce Fields | f3e4223 | 2011-08-24 12:27:31 -0400 | [diff] [blame] | 2756 | encode_seqid_op_tail(resp, save, nfserr); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2757 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2758 | } |
| 2759 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2760 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2761 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2762 | { |
| 2763 | if (nfserr == nfserr_denied) |
| 2764 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2765 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2766 | } |
| 2767 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2768 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2769 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2770 | { |
| 2771 | ENCODE_SEQID_OP_HEAD; |
| 2772 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2773 | if (!nfserr) |
| 2774 | nfsd4_encode_stateid(resp, &locku->lu_stateid); |
| 2775 | |
J. Bruce Fields | f3e4223 | 2011-08-24 12:27:31 -0400 | [diff] [blame] | 2776 | encode_seqid_op_tail(resp, save, nfserr); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2777 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2778 | } |
| 2779 | |
| 2780 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2781 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2782 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2783 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2784 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2785 | |
| 2786 | if (!nfserr) { |
| 2787 | RESERVE_SPACE(20); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2788 | write_cinfo(&p, &link->li_cinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2789 | ADJUST_ARGS(); |
| 2790 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2791 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2792 | } |
| 2793 | |
| 2794 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2795 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2796 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2797 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2798 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2799 | ENCODE_SEQID_OP_HEAD; |
| 2800 | |
| 2801 | if (nfserr) |
| 2802 | goto out; |
| 2803 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2804 | nfsd4_encode_stateid(resp, &open->op_stateid); |
| 2805 | RESERVE_SPACE(40); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2806 | write_cinfo(&p, &open->op_cinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2807 | WRITE32(open->op_rflags); |
| 2808 | WRITE32(2); |
| 2809 | WRITE32(open->op_bmval[0]); |
| 2810 | WRITE32(open->op_bmval[1]); |
| 2811 | WRITE32(open->op_delegate_type); |
| 2812 | ADJUST_ARGS(); |
| 2813 | |
| 2814 | switch (open->op_delegate_type) { |
| 2815 | case NFS4_OPEN_DELEGATE_NONE: |
| 2816 | break; |
| 2817 | case NFS4_OPEN_DELEGATE_READ: |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2818 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
| 2819 | RESERVE_SPACE(20); |
NeilBrown | 7b190fe | 2005-06-23 22:03:23 -0700 | [diff] [blame] | 2820 | WRITE32(open->op_recall); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2821 | |
| 2822 | /* |
| 2823 | * TODO: ACE's in delegations |
| 2824 | */ |
| 2825 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
| 2826 | WRITE32(0); |
| 2827 | WRITE32(0); |
| 2828 | WRITE32(0); /* XXX: is NULL principal ok? */ |
| 2829 | ADJUST_ARGS(); |
| 2830 | break; |
| 2831 | case NFS4_OPEN_DELEGATE_WRITE: |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2832 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
| 2833 | RESERVE_SPACE(32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2834 | WRITE32(0); |
| 2835 | |
| 2836 | /* |
| 2837 | * TODO: space_limit's in delegations |
| 2838 | */ |
| 2839 | WRITE32(NFS4_LIMIT_SIZE); |
| 2840 | WRITE32(~(u32)0); |
| 2841 | WRITE32(~(u32)0); |
| 2842 | |
| 2843 | /* |
| 2844 | * TODO: ACE's in delegations |
| 2845 | */ |
| 2846 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
| 2847 | WRITE32(0); |
| 2848 | WRITE32(0); |
| 2849 | WRITE32(0); /* XXX: is NULL principal ok? */ |
| 2850 | ADJUST_ARGS(); |
| 2851 | break; |
Benny Halevy | d24433c | 2012-02-16 20:57:17 +0200 | [diff] [blame] | 2852 | case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ |
| 2853 | switch (open->op_why_no_deleg) { |
| 2854 | case WND4_CONTENTION: |
| 2855 | case WND4_RESOURCE: |
| 2856 | RESERVE_SPACE(8); |
| 2857 | WRITE32(open->op_why_no_deleg); |
| 2858 | WRITE32(0); /* deleg signaling not supported yet */ |
| 2859 | break; |
| 2860 | default: |
| 2861 | RESERVE_SPACE(4); |
| 2862 | WRITE32(open->op_why_no_deleg); |
| 2863 | } |
| 2864 | ADJUST_ARGS(); |
| 2865 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2866 | default: |
| 2867 | BUG(); |
| 2868 | } |
| 2869 | /* XXX save filehandle here */ |
| 2870 | out: |
J. Bruce Fields | f3e4223 | 2011-08-24 12:27:31 -0400 | [diff] [blame] | 2871 | encode_seqid_op_tail(resp, save, nfserr); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2872 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2873 | } |
| 2874 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2875 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2876 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2877 | { |
| 2878 | ENCODE_SEQID_OP_HEAD; |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2879 | |
| 2880 | if (!nfserr) |
| 2881 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2882 | |
J. Bruce Fields | f3e4223 | 2011-08-24 12:27:31 -0400 | [diff] [blame] | 2883 | encode_seqid_op_tail(resp, save, nfserr); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2884 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2885 | } |
| 2886 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2887 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2888 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2889 | { |
| 2890 | ENCODE_SEQID_OP_HEAD; |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2891 | |
| 2892 | if (!nfserr) |
| 2893 | nfsd4_encode_stateid(resp, &od->od_stateid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2894 | |
J. Bruce Fields | f3e4223 | 2011-08-24 12:27:31 -0400 | [diff] [blame] | 2895 | encode_seqid_op_tail(resp, save, nfserr); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2896 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2897 | } |
| 2898 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2899 | static __be32 |
| 2900 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2901 | struct nfsd4_read *read) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2902 | { |
| 2903 | u32 eof; |
| 2904 | int v, pn; |
| 2905 | unsigned long maxcount; |
| 2906 | long len; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2907 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2908 | |
| 2909 | if (nfserr) |
| 2910 | return nfserr; |
| 2911 | if (resp->xbuf->page_len) |
| 2912 | return nfserr_resource; |
| 2913 | |
| 2914 | RESERVE_SPACE(8); /* eof flag and byte count */ |
| 2915 | |
Greg Banks | 7adae48 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2916 | maxcount = svc_max_payload(resp->rqstp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2917 | if (maxcount > read->rd_length) |
| 2918 | maxcount = read->rd_length; |
| 2919 | |
| 2920 | len = maxcount; |
| 2921 | v = 0; |
| 2922 | while (len > 0) { |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2923 | pn = resp->rqstp->rq_resused++; |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2924 | resp->rqstp->rq_vec[v].iov_base = |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2925 | page_address(resp->rqstp->rq_respages[pn]); |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2926 | resp->rqstp->rq_vec[v].iov_len = |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2927 | len < PAGE_SIZE ? len : PAGE_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2928 | v++; |
| 2929 | len -= PAGE_SIZE; |
| 2930 | } |
| 2931 | read->rd_vlen = v; |
| 2932 | |
J. Bruce Fields | 039a87c | 2010-07-30 11:33:32 -0400 | [diff] [blame] | 2933 | nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2934 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2935 | &maxcount); |
| 2936 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | if (nfserr) |
| 2938 | return nfserr; |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2939 | eof = (read->rd_offset + maxcount >= |
| 2940 | read->rd_fhp->fh_dentry->d_inode->i_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2941 | |
| 2942 | WRITE32(eof); |
| 2943 | WRITE32(maxcount); |
| 2944 | ADJUST_ARGS(); |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2945 | resp->xbuf->head[0].iov_len = (char*)p |
| 2946 | - (char*)resp->xbuf->head[0].iov_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2947 | resp->xbuf->page_len = maxcount; |
| 2948 | |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2949 | /* Use rest of head for padding and remaining ops: */ |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2950 | resp->xbuf->tail[0].iov_base = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2951 | resp->xbuf->tail[0].iov_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2952 | if (maxcount&3) { |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2953 | RESERVE_SPACE(4); |
| 2954 | WRITE32(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2955 | resp->xbuf->tail[0].iov_base += maxcount&3; |
| 2956 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2957 | ADJUST_ARGS(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2958 | } |
| 2959 | return 0; |
| 2960 | } |
| 2961 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2962 | static __be32 |
| 2963 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2964 | { |
| 2965 | int maxcount; |
| 2966 | char *page; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2967 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2968 | |
| 2969 | if (nfserr) |
| 2970 | return nfserr; |
| 2971 | if (resp->xbuf->page_len) |
| 2972 | return nfserr_resource; |
| 2973 | |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2974 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2975 | |
| 2976 | maxcount = PAGE_SIZE; |
| 2977 | RESERVE_SPACE(4); |
| 2978 | |
| 2979 | /* |
| 2980 | * XXX: By default, the ->readlink() VFS op will truncate symlinks |
| 2981 | * if they would overflow the buffer. Is this kosher in NFSv4? If |
| 2982 | * not, one easy fix is: if ->readlink() precisely fills the buffer, |
| 2983 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. |
| 2984 | */ |
| 2985 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); |
| 2986 | if (nfserr == nfserr_isdir) |
| 2987 | return nfserr_inval; |
| 2988 | if (nfserr) |
| 2989 | return nfserr; |
| 2990 | |
| 2991 | WRITE32(maxcount); |
| 2992 | ADJUST_ARGS(); |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2993 | resp->xbuf->head[0].iov_len = (char*)p |
| 2994 | - (char*)resp->xbuf->head[0].iov_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2995 | resp->xbuf->page_len = maxcount; |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2996 | |
| 2997 | /* Use rest of head for padding and remaining ops: */ |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2998 | resp->xbuf->tail[0].iov_base = p; |
| 2999 | resp->xbuf->tail[0].iov_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3000 | if (maxcount&3) { |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 3001 | RESERVE_SPACE(4); |
| 3002 | WRITE32(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3003 | resp->xbuf->tail[0].iov_base += maxcount&3; |
| 3004 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 3005 | ADJUST_ARGS(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3006 | } |
| 3007 | return 0; |
| 3008 | } |
| 3009 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3010 | static __be32 |
| 3011 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3012 | { |
| 3013 | int maxcount; |
| 3014 | loff_t offset; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3015 | __be32 *page, *savep, *tailbase; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3016 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3017 | |
| 3018 | if (nfserr) |
| 3019 | return nfserr; |
| 3020 | if (resp->xbuf->page_len) |
| 3021 | return nfserr_resource; |
| 3022 | |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 3023 | RESERVE_SPACE(NFS4_VERIFIER_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3024 | savep = p; |
| 3025 | |
| 3026 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ |
| 3027 | WRITE32(0); |
| 3028 | WRITE32(0); |
| 3029 | ADJUST_ARGS(); |
| 3030 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; |
NeilBrown | bb6e8a9 | 2006-04-10 22:55:33 -0700 | [diff] [blame] | 3031 | tailbase = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3032 | |
| 3033 | maxcount = PAGE_SIZE; |
| 3034 | if (maxcount > readdir->rd_maxcount) |
| 3035 | maxcount = readdir->rd_maxcount; |
| 3036 | |
| 3037 | /* |
| 3038 | * Convert from bytes to words, account for the two words already |
| 3039 | * written, make sure to leave two words at the end for the next |
| 3040 | * pointer and eof field. |
| 3041 | */ |
| 3042 | maxcount = (maxcount >> 2) - 4; |
| 3043 | if (maxcount < 0) { |
| 3044 | nfserr = nfserr_toosmall; |
| 3045 | goto err_no_verf; |
| 3046 | } |
| 3047 | |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 3048 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3049 | readdir->common.err = 0; |
| 3050 | readdir->buflen = maxcount; |
| 3051 | readdir->buffer = page; |
| 3052 | readdir->offset = NULL; |
| 3053 | |
| 3054 | offset = readdir->rd_cookie; |
| 3055 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, |
| 3056 | &offset, |
| 3057 | &readdir->common, nfsd4_encode_dirent); |
| 3058 | if (nfserr == nfs_ok && |
| 3059 | readdir->common.err == nfserr_toosmall && |
| 3060 | readdir->buffer == page) |
| 3061 | nfserr = nfserr_toosmall; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3062 | if (nfserr) |
| 3063 | goto err_no_verf; |
| 3064 | |
| 3065 | if (readdir->offset) |
| 3066 | xdr_encode_hyper(readdir->offset, offset); |
| 3067 | |
| 3068 | p = readdir->buffer; |
| 3069 | *p++ = 0; /* no more entries */ |
| 3070 | *p++ = htonl(readdir->common.err == nfserr_eof); |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 3071 | resp->xbuf->page_len = ((char*)p) - (char*)page_address( |
| 3072 | resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3073 | |
NeilBrown | bb6e8a9 | 2006-04-10 22:55:33 -0700 | [diff] [blame] | 3074 | /* Use rest of head for padding and remaining ops: */ |
NeilBrown | bb6e8a9 | 2006-04-10 22:55:33 -0700 | [diff] [blame] | 3075 | resp->xbuf->tail[0].iov_base = tailbase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3076 | resp->xbuf->tail[0].iov_len = 0; |
| 3077 | resp->p = resp->xbuf->tail[0].iov_base; |
NeilBrown | bb6e8a9 | 2006-04-10 22:55:33 -0700 | [diff] [blame] | 3078 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3079 | |
| 3080 | return 0; |
| 3081 | err_no_verf: |
| 3082 | p = savep; |
| 3083 | ADJUST_ARGS(); |
| 3084 | return nfserr; |
| 3085 | } |
| 3086 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3087 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3088 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3089 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3090 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3091 | |
| 3092 | if (!nfserr) { |
| 3093 | RESERVE_SPACE(20); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 3094 | write_cinfo(&p, &remove->rm_cinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3095 | ADJUST_ARGS(); |
| 3096 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3097 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3098 | } |
| 3099 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3100 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3101 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3102 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3103 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3104 | |
| 3105 | if (!nfserr) { |
| 3106 | RESERVE_SPACE(40); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 3107 | write_cinfo(&p, &rename->rn_sinfo); |
| 3108 | write_cinfo(&p, &rename->rn_tinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3109 | ADJUST_ARGS(); |
| 3110 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3111 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3112 | } |
| 3113 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3114 | static __be32 |
Mi Jinlong | 22b6dee | 2010-12-27 14:29:57 +0800 | [diff] [blame] | 3115 | nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, |
| 3116 | __be32 nfserr,struct svc_export *exp) |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 3117 | { |
| 3118 | int i = 0; |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 3119 | u32 nflavs; |
| 3120 | struct exp_flavor_info *flavs; |
| 3121 | struct exp_flavor_info def_flavs[2]; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3122 | __be32 *p; |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 3123 | |
| 3124 | if (nfserr) |
| 3125 | goto out; |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 3126 | if (exp->ex_nflavors) { |
| 3127 | flavs = exp->ex_flavors; |
| 3128 | nflavs = exp->ex_nflavors; |
| 3129 | } else { /* Handling of some defaults in absence of real secinfo: */ |
| 3130 | flavs = def_flavs; |
| 3131 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { |
| 3132 | nflavs = 2; |
| 3133 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; |
| 3134 | flavs[1].pseudoflavor = RPC_AUTH_NULL; |
| 3135 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { |
| 3136 | nflavs = 1; |
| 3137 | flavs[0].pseudoflavor |
| 3138 | = svcauth_gss_flavor(exp->ex_client); |
| 3139 | } else { |
| 3140 | nflavs = 1; |
| 3141 | flavs[0].pseudoflavor |
| 3142 | = exp->ex_client->flavour->flavour; |
| 3143 | } |
| 3144 | } |
| 3145 | |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 3146 | RESERVE_SPACE(4); |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 3147 | WRITE32(nflavs); |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 3148 | ADJUST_ARGS(); |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 3149 | for (i = 0; i < nflavs; i++) { |
| 3150 | u32 flav = flavs[i].pseudoflavor; |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 3151 | struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav); |
| 3152 | |
| 3153 | if (gm) { |
| 3154 | RESERVE_SPACE(4); |
| 3155 | WRITE32(RPC_AUTH_GSS); |
| 3156 | ADJUST_ARGS(); |
| 3157 | RESERVE_SPACE(4 + gm->gm_oid.len); |
| 3158 | WRITE32(gm->gm_oid.len); |
| 3159 | WRITEMEM(gm->gm_oid.data, gm->gm_oid.len); |
| 3160 | ADJUST_ARGS(); |
| 3161 | RESERVE_SPACE(4); |
| 3162 | WRITE32(0); /* qop */ |
| 3163 | ADJUST_ARGS(); |
| 3164 | RESERVE_SPACE(4); |
| 3165 | WRITE32(gss_pseudoflavor_to_service(gm, flav)); |
| 3166 | ADJUST_ARGS(); |
| 3167 | gss_mech_put(gm); |
| 3168 | } else { |
| 3169 | RESERVE_SPACE(4); |
| 3170 | WRITE32(flav); |
| 3171 | ADJUST_ARGS(); |
| 3172 | } |
| 3173 | } |
| 3174 | out: |
| 3175 | if (exp) |
| 3176 | exp_put(exp); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3177 | return nfserr; |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 3178 | } |
| 3179 | |
Mi Jinlong | 22b6dee | 2010-12-27 14:29:57 +0800 | [diff] [blame] | 3180 | static __be32 |
| 3181 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, |
| 3182 | struct nfsd4_secinfo *secinfo) |
| 3183 | { |
| 3184 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp); |
| 3185 | } |
| 3186 | |
| 3187 | static __be32 |
| 3188 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, |
| 3189 | struct nfsd4_secinfo_no_name *secinfo) |
| 3190 | { |
| 3191 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp); |
| 3192 | } |
| 3193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3194 | /* |
| 3195 | * The SETATTR encode routine is special -- it always encodes a bitmap, |
| 3196 | * regardless of the error status. |
| 3197 | */ |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3198 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3199 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3200 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3201 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3202 | |
| 3203 | RESERVE_SPACE(12); |
| 3204 | if (nfserr) { |
| 3205 | WRITE32(2); |
| 3206 | WRITE32(0); |
| 3207 | WRITE32(0); |
| 3208 | } |
| 3209 | else { |
| 3210 | WRITE32(2); |
| 3211 | WRITE32(setattr->sa_bmval[0]); |
| 3212 | WRITE32(setattr->sa_bmval[1]); |
| 3213 | } |
| 3214 | ADJUST_ARGS(); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3215 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3216 | } |
| 3217 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3218 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3219 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3220 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3221 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3222 | |
| 3223 | if (!nfserr) { |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 3224 | RESERVE_SPACE(8 + NFS4_VERIFIER_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3225 | WRITEMEM(&scd->se_clientid, 8); |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 3226 | WRITEMEM(&scd->se_confirm, NFS4_VERIFIER_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3227 | ADJUST_ARGS(); |
| 3228 | } |
| 3229 | else if (nfserr == nfserr_clid_inuse) { |
| 3230 | RESERVE_SPACE(8); |
| 3231 | WRITE32(0); |
| 3232 | WRITE32(0); |
| 3233 | ADJUST_ARGS(); |
| 3234 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3235 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3236 | } |
| 3237 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3238 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3239 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3240 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3241 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3242 | |
| 3243 | if (!nfserr) { |
| 3244 | RESERVE_SPACE(16); |
| 3245 | WRITE32(write->wr_bytes_written); |
| 3246 | WRITE32(write->wr_how_written); |
Chuck Lever | ab4684d | 2012-03-02 17:13:50 -0500 | [diff] [blame] | 3247 | WRITEMEM(write->wr_verifier.data, NFS4_VERIFIER_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3248 | ADJUST_ARGS(); |
| 3249 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3250 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3251 | } |
| 3252 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3253 | static __be32 |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3254 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr, |
| 3255 | struct nfsd4_exchange_id *exid) |
| 3256 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3257 | __be32 *p; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 3258 | char *major_id; |
| 3259 | char *server_scope; |
| 3260 | int major_id_sz; |
| 3261 | int server_scope_sz; |
| 3262 | uint64_t minor_id = 0; |
| 3263 | |
| 3264 | if (nfserr) |
| 3265 | return nfserr; |
| 3266 | |
| 3267 | major_id = utsname()->nodename; |
| 3268 | major_id_sz = strlen(major_id); |
| 3269 | server_scope = utsname()->nodename; |
| 3270 | server_scope_sz = strlen(server_scope); |
| 3271 | |
| 3272 | RESERVE_SPACE( |
| 3273 | 8 /* eir_clientid */ + |
| 3274 | 4 /* eir_sequenceid */ + |
| 3275 | 4 /* eir_flags */ + |
| 3276 | 4 /* spr_how (SP4_NONE) */ + |
| 3277 | 8 /* so_minor_id */ + |
| 3278 | 4 /* so_major_id.len */ + |
| 3279 | (XDR_QUADLEN(major_id_sz) * 4) + |
| 3280 | 4 /* eir_server_scope.len */ + |
| 3281 | (XDR_QUADLEN(server_scope_sz) * 4) + |
| 3282 | 4 /* eir_server_impl_id.count (0) */); |
| 3283 | |
| 3284 | WRITEMEM(&exid->clientid, 8); |
| 3285 | WRITE32(exid->seqid); |
| 3286 | WRITE32(exid->flags); |
| 3287 | |
| 3288 | /* state_protect4_r. Currently only support SP4_NONE */ |
| 3289 | BUG_ON(exid->spa_how != SP4_NONE); |
| 3290 | WRITE32(exid->spa_how); |
| 3291 | |
| 3292 | /* The server_owner struct */ |
| 3293 | WRITE64(minor_id); /* Minor id */ |
| 3294 | /* major id */ |
| 3295 | WRITE32(major_id_sz); |
| 3296 | WRITEMEM(major_id, major_id_sz); |
| 3297 | |
| 3298 | /* Server scope */ |
| 3299 | WRITE32(server_scope_sz); |
| 3300 | WRITEMEM(server_scope, server_scope_sz); |
| 3301 | |
| 3302 | /* Implementation id */ |
| 3303 | WRITE32(0); /* zero length nfs_impl_id4 array */ |
| 3304 | ADJUST_ARGS(); |
| 3305 | return 0; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3306 | } |
| 3307 | |
| 3308 | static __be32 |
| 3309 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr, |
| 3310 | struct nfsd4_create_session *sess) |
| 3311 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3312 | __be32 *p; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 3313 | |
| 3314 | if (nfserr) |
| 3315 | return nfserr; |
| 3316 | |
| 3317 | RESERVE_SPACE(24); |
| 3318 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 3319 | WRITE32(sess->seqid); |
| 3320 | WRITE32(sess->flags); |
| 3321 | ADJUST_ARGS(); |
| 3322 | |
| 3323 | RESERVE_SPACE(28); |
| 3324 | WRITE32(0); /* headerpadsz */ |
| 3325 | WRITE32(sess->fore_channel.maxreq_sz); |
| 3326 | WRITE32(sess->fore_channel.maxresp_sz); |
| 3327 | WRITE32(sess->fore_channel.maxresp_cached); |
| 3328 | WRITE32(sess->fore_channel.maxops); |
| 3329 | WRITE32(sess->fore_channel.maxreqs); |
| 3330 | WRITE32(sess->fore_channel.nr_rdma_attrs); |
| 3331 | ADJUST_ARGS(); |
| 3332 | |
| 3333 | if (sess->fore_channel.nr_rdma_attrs) { |
| 3334 | RESERVE_SPACE(4); |
| 3335 | WRITE32(sess->fore_channel.rdma_attrs); |
| 3336 | ADJUST_ARGS(); |
| 3337 | } |
| 3338 | |
| 3339 | RESERVE_SPACE(28); |
| 3340 | WRITE32(0); /* headerpadsz */ |
| 3341 | WRITE32(sess->back_channel.maxreq_sz); |
| 3342 | WRITE32(sess->back_channel.maxresp_sz); |
| 3343 | WRITE32(sess->back_channel.maxresp_cached); |
| 3344 | WRITE32(sess->back_channel.maxops); |
| 3345 | WRITE32(sess->back_channel.maxreqs); |
| 3346 | WRITE32(sess->back_channel.nr_rdma_attrs); |
| 3347 | ADJUST_ARGS(); |
| 3348 | |
| 3349 | if (sess->back_channel.nr_rdma_attrs) { |
| 3350 | RESERVE_SPACE(4); |
| 3351 | WRITE32(sess->back_channel.rdma_attrs); |
| 3352 | ADJUST_ARGS(); |
| 3353 | } |
| 3354 | return 0; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3355 | } |
| 3356 | |
| 3357 | static __be32 |
| 3358 | nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr, |
| 3359 | struct nfsd4_destroy_session *destroy_session) |
| 3360 | { |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3361 | return nfserr; |
| 3362 | } |
| 3363 | |
Daniel Mack | c47d832 | 2011-05-16 16:38:14 +0200 | [diff] [blame] | 3364 | static __be32 |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 3365 | nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, int nfserr, |
| 3366 | struct nfsd4_free_stateid *free_stateid) |
| 3367 | { |
| 3368 | __be32 *p; |
| 3369 | |
| 3370 | if (nfserr) |
| 3371 | return nfserr; |
| 3372 | |
| 3373 | RESERVE_SPACE(4); |
| 3374 | WRITE32(nfserr); |
| 3375 | ADJUST_ARGS(); |
| 3376 | return nfserr; |
| 3377 | } |
| 3378 | |
| 3379 | static __be32 |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3380 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr, |
| 3381 | struct nfsd4_sequence *seq) |
| 3382 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3383 | __be32 *p; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 3384 | |
| 3385 | if (nfserr) |
| 3386 | return nfserr; |
| 3387 | |
| 3388 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); |
| 3389 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 3390 | WRITE32(seq->seqid); |
| 3391 | WRITE32(seq->slotid); |
J. Bruce Fields | b7d7ca3 | 2011-08-31 15:39:30 -0400 | [diff] [blame] | 3392 | /* Note slotid's are numbered from zero: */ |
| 3393 | WRITE32(seq->maxslots - 1); /* sr_highest_slotid */ |
| 3394 | WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */ |
J. Bruce Fields | 0d7bb71 | 2010-11-18 08:30:33 -0500 | [diff] [blame] | 3395 | WRITE32(seq->status_flags); |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 3396 | |
| 3397 | ADJUST_ARGS(); |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 3398 | resp->cstate.datap = p; /* DRC cache data pointer */ |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 3399 | return 0; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3400 | } |
| 3401 | |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3402 | __be32 |
| 3403 | nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, int nfserr, |
| 3404 | struct nfsd4_test_stateid *test_stateid) |
| 3405 | { |
Bryan Schumaker | 03cfb42 | 2012-01-27 10:22:49 -0500 | [diff] [blame] | 3406 | struct nfsd4_test_stateid_id *stateid, *next; |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3407 | __be32 *p; |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3408 | |
Bryan Schumaker | 03cfb42 | 2012-01-27 10:22:49 -0500 | [diff] [blame] | 3409 | RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids)); |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3410 | *p++ = htonl(test_stateid->ts_num_ids); |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3411 | |
Bryan Schumaker | 03cfb42 | 2012-01-27 10:22:49 -0500 | [diff] [blame] | 3412 | list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { |
| 3413 | *p++ = htonl(stateid->ts_id_status); |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3414 | } |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3415 | |
Bryan Schumaker | 03cfb42 | 2012-01-27 10:22:49 -0500 | [diff] [blame] | 3416 | ADJUST_ARGS(); |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3417 | return nfserr; |
| 3418 | } |
| 3419 | |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3420 | static __be32 |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3421 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) |
| 3422 | { |
| 3423 | return nfserr; |
| 3424 | } |
| 3425 | |
| 3426 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); |
| 3427 | |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3428 | /* |
| 3429 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 |
| 3430 | * since we don't need to filter out obsolete ops as this is |
| 3431 | * done in the decoding phase. |
| 3432 | */ |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3433 | static nfsd4_enc nfsd4_enc_ops[] = { |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 3434 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
| 3435 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, |
| 3436 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, |
| 3437 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, |
| 3438 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, |
| 3439 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, |
| 3440 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, |
| 3441 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, |
| 3442 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, |
| 3443 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, |
| 3444 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, |
| 3445 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, |
| 3446 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, |
| 3447 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, |
| 3448 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, |
| 3449 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, |
Benny Halevy | 84f09f4 | 2009-03-04 23:05:35 +0200 | [diff] [blame] | 3450 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 3451 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
| 3452 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, |
| 3453 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3454 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3455 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3456 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, |
| 3457 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, |
| 3458 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, |
| 3459 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, |
| 3460 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, |
| 3461 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, |
| 3462 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3463 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3464 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, |
| 3465 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, |
| 3466 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, |
| 3467 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, |
| 3468 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, |
| 3469 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, |
| 3470 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3471 | |
| 3472 | /* NFSv4.1 operations */ |
| 3473 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 3474 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3475 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
| 3476 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, |
| 3477 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, |
Bryan Schumaker | e1ca12d | 2011-07-13 11:04:21 -0400 | [diff] [blame] | 3478 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_free_stateid, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3479 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
| 3480 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, |
| 3481 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, |
| 3482 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, |
| 3483 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, |
| 3484 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, |
Mi Jinlong | 22b6dee | 2010-12-27 14:29:57 +0800 | [diff] [blame] | 3485 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3486 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
| 3487 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, |
Bryan Schumaker | 1745680 | 2011-07-13 10:50:48 -0400 | [diff] [blame] | 3488 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3489 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
| 3490 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, |
| 3491 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3492 | }; |
| 3493 | |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3494 | /* |
| 3495 | * Calculate the total amount of memory that the compound response has taken |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 3496 | * after encoding the current operation with pad. |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3497 | * |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 3498 | * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop() |
| 3499 | * which was specified at nfsd4_operation, else pad is zero. |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3500 | * |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 3501 | * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached. |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3502 | * |
| 3503 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so |
| 3504 | * will be at least a page and will therefore hold the xdr_buf head. |
| 3505 | */ |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 3506 | int nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3507 | { |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3508 | struct xdr_buf *xb = &resp->rqstp->rq_res; |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3509 | struct nfsd4_session *session = NULL; |
| 3510 | struct nfsd4_slot *slot = resp->cstate.slot; |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 3511 | u32 length, tlen = 0; |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3512 | |
| 3513 | if (!nfsd4_has_session(&resp->cstate)) |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 3514 | return 0; |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3515 | |
| 3516 | session = resp->cstate.session; |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 3517 | if (session == NULL) |
| 3518 | return 0; |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3519 | |
| 3520 | if (xb->page_len == 0) { |
| 3521 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; |
| 3522 | } else { |
| 3523 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) |
| 3524 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; |
| 3525 | |
| 3526 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; |
| 3527 | } |
| 3528 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, |
| 3529 | length, xb->page_len, tlen, pad); |
| 3530 | |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 3531 | if (length > session->se_fchannel.maxresp_sz) |
| 3532 | return nfserr_rep_too_big; |
| 3533 | |
J. Bruce Fields | 73e7948 | 2012-02-13 16:39:00 -0500 | [diff] [blame] | 3534 | if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) && |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 3535 | length > session->se_fchannel.maxresp_cached) |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3536 | return nfserr_rep_too_big_to_cache; |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 3537 | |
| 3538 | return 0; |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3539 | } |
| 3540 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3541 | void |
| 3542 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) |
| 3543 | { |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3544 | __be32 *statp; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3545 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3546 | |
| 3547 | RESERVE_SPACE(8); |
| 3548 | WRITE32(op->opnum); |
| 3549 | statp = p++; /* to be backfilled at the end */ |
| 3550 | ADJUST_ARGS(); |
| 3551 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3552 | if (op->opnum == OP_ILLEGAL) |
| 3553 | goto status; |
| 3554 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || |
| 3555 | !nfsd4_enc_ops[op->opnum]); |
| 3556 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3557 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
Mi Jinlong | 58e7b33 | 2011-08-28 18:18:56 +0800 | [diff] [blame] | 3558 | if (!op->status) |
| 3559 | op->status = nfsd4_check_resp_size(resp, 0); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3560 | status: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3561 | /* |
| 3562 | * Note: We write the status directly, instead of using WRITE32(), |
| 3563 | * since it is already in network byte order. |
| 3564 | */ |
| 3565 | *statp = op->status; |
| 3566 | } |
| 3567 | |
| 3568 | /* |
| 3569 | * Encode the reply stored in the stateowner reply cache |
| 3570 | * |
| 3571 | * XDR note: do not encode rp->rp_buflen: the buffer contains the |
| 3572 | * previously sent already encoded operation. |
| 3573 | * |
| 3574 | * called with nfs4_lock_state() held |
| 3575 | */ |
| 3576 | void |
| 3577 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) |
| 3578 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3579 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3580 | struct nfs4_replay *rp = op->replay; |
| 3581 | |
| 3582 | BUG_ON(!rp); |
| 3583 | |
| 3584 | RESERVE_SPACE(8); |
| 3585 | WRITE32(op->opnum); |
| 3586 | *p++ = rp->rp_status; /* already xdr'ed */ |
| 3587 | ADJUST_ARGS(); |
| 3588 | |
| 3589 | RESERVE_SPACE(rp->rp_buflen); |
| 3590 | WRITEMEM(rp->rp_buf, rp->rp_buflen); |
| 3591 | ADJUST_ARGS(); |
| 3592 | } |
| 3593 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3594 | int |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3595 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3596 | { |
| 3597 | return xdr_ressize_check(rqstp, p); |
| 3598 | } |
| 3599 | |
J. Bruce Fields | 3e98abf | 2011-07-16 17:15:10 -0400 | [diff] [blame] | 3600 | int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3601 | { |
J. Bruce Fields | 3e98abf | 2011-07-16 17:15:10 -0400 | [diff] [blame] | 3602 | struct svc_rqst *rqstp = rq; |
| 3603 | struct nfsd4_compoundargs *args = rqstp->rq_argp; |
| 3604 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3605 | if (args->ops != args->iops) { |
| 3606 | kfree(args->ops); |
| 3607 | args->ops = args->iops; |
| 3608 | } |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 3609 | kfree(args->tmpp); |
| 3610 | args->tmpp = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3611 | while (args->to_free) { |
| 3612 | struct tmpbuf *tb = args->to_free; |
| 3613 | args->to_free = tb->next; |
| 3614 | tb->release(tb->buf); |
| 3615 | kfree(tb); |
| 3616 | } |
J. Bruce Fields | 3e98abf | 2011-07-16 17:15:10 -0400 | [diff] [blame] | 3617 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3618 | } |
| 3619 | |
| 3620 | int |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3621 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3622 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3623 | args->p = p; |
| 3624 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; |
| 3625 | args->pagelist = rqstp->rq_arg.pages; |
| 3626 | args->pagelen = rqstp->rq_arg.page_len; |
| 3627 | args->tmpp = NULL; |
| 3628 | args->to_free = NULL; |
| 3629 | args->ops = args->iops; |
| 3630 | args->rqstp = rqstp; |
| 3631 | |
J. Bruce Fields | 3e98abf | 2011-07-16 17:15:10 -0400 | [diff] [blame] | 3632 | return !nfsd4_decode_compound(args); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3633 | } |
| 3634 | |
| 3635 | int |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3636 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3637 | { |
| 3638 | /* |
| 3639 | * All that remains is to write the tag and operation count... |
| 3640 | */ |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 3641 | struct nfsd4_compound_state *cs = &resp->cstate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3642 | struct kvec *iov; |
| 3643 | p = resp->tagp; |
| 3644 | *p++ = htonl(resp->taglen); |
| 3645 | memcpy(p, resp->tag, resp->taglen); |
| 3646 | p += XDR_QUADLEN(resp->taglen); |
| 3647 | *p++ = htonl(resp->opcnt); |
| 3648 | |
| 3649 | if (rqstp->rq_res.page_len) |
| 3650 | iov = &rqstp->rq_res.tail[0]; |
| 3651 | else |
| 3652 | iov = &rqstp->rq_res.head[0]; |
| 3653 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; |
| 3654 | BUG_ON(iov->iov_len > PAGE_SIZE); |
J. Bruce Fields | 26c0c75 | 2010-04-24 15:35:43 -0400 | [diff] [blame] | 3655 | if (nfsd4_has_session(cs)) { |
| 3656 | if (cs->status != nfserr_replay_cache) { |
| 3657 | nfsd4_store_cache_entry(resp); |
J. Bruce Fields | 73e7948 | 2012-02-13 16:39:00 -0500 | [diff] [blame] | 3658 | cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE; |
J. Bruce Fields | 26c0c75 | 2010-04-24 15:35:43 -0400 | [diff] [blame] | 3659 | } |
Benny Halevy | d768298 | 2010-05-12 00:13:54 +0300 | [diff] [blame] | 3660 | /* Renew the clientid on success and on replay */ |
| 3661 | release_session_client(cs->session); |
J. Bruce Fields | 76407f7 | 2010-06-22 14:10:14 -0400 | [diff] [blame] | 3662 | nfsd4_put_session(cs->session); |
Andy Adamson | da3846a | 2009-04-03 08:28:22 +0300 | [diff] [blame] | 3663 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3664 | return 1; |
| 3665 | } |
| 3666 | |
| 3667 | /* |
| 3668 | * Local variables: |
| 3669 | * c-basic-offset: 8 |
| 3670 | * End: |
| 3671 | */ |